Name: Oatmeal Cream Pie Cake Recipe
Prep time: 30 min
Cook time: 22 min
Total time: 3 h 20 min
Cuisine: American
Ingredients: 2 1/2 cups water; 2 cups quick cook oats (uncooked); 2 2/3 cups all purpose flour (*see notes below for measuring*); 1 tbsp + 1 tsp ground cinnamon; 1 teaspoon fine sea salt; 1/2 tsp nutmeg; 2 teaspoons baking soda; 1 cup unsalted butter (room temperature); 1 cup Domino® Granulated Sugar; 1 cup Domino® Light Brown Sugar (packed); 1 tbsp vanilla extract; 3 large eggs (room temperature); 1/4 cup full-fat sour cream (room temperature); 2 1/2 cups unsalted butter (room temperature); 4 cups powdered sugar; 2 tbsp heavy cream; 2 tsp vanilla extract; 1 tsp vanilla bean paste; 1 cup white chocolate chips; 1/4 cup + 3 tbsp heavy cream; White food coloring (optional but makes the glaze more white instead of yellow); Oatmeal cream pie cookies (for decorating)

Jump to Recipe· 4.2 from 15 reviews

I am absolutely in love with this Oatmeal Cream Pie Cake Recipe because it manages to capture the nostalgia of the classic oatmeal cream pie cookie and elevate it into a show-stopping, layered cake. The moist oatmeal cake layers paired with the silky vanilla buttercream and finished with a luscious white chocolate glaze make this dessert a delightful treat that feels both comforting and elegant. Every time I bake it, I am amazed at how all the simple ingredients come together to create such an indulgent crowd-pleaser.

Why You’ll Love This Oatmeal Cream Pie Cake Recipe

What makes this recipe truly special to me is its perfect balance of flavors and textures. The cinnamon-spiced oatmeal cake layers are soft yet hearty, reminding me of cozy childhood breakfasts, while the vanilla buttercream frosting adds a creamy, rich sweetness that plays beautifully against the cake. The white chocolate glaze on top adds a delicate, smooth finish that makes this dessert stand out at any gathering. I love how all these elements feel nostalgic yet sophisticated at once.

Another reason this Oatmeal Cream Pie Cake Recipe has become a favorite of mine is how approachable it is. Despite looking impressive, it’s quite straightforward to make with easy-to-source ingredients and clear steps. The process of assembling the cake is fun and rewarding, and I find it perfect for special occasions like birthdays, holidays, or a weekend treat when I want to impress friends without stressing over a complicated recipe. It’s a lovely way to bring a classic cookie flavor to the dessert table in a unique way.

Ingredients You’ll Need

A round cake with two layers visible through a smooth cream-colored frosting. The frosting covers the top and sides evenly, with the cake layers showing as light brown lines in the middle. The cake sits on a white parchment paper on a round wooden board. The background is softly blurred with white marbled texture underneath. Photo taken with an iphone --ar 4:5 --v 7

Here’s a rundown of the simple but essential ingredients that give this cake its wonderful flavor, texture, and color. Each one plays a vital role, from the warm spices that flavor the cake to the luscious dairy components that create the frosting’s creamy texture.

Water: The hot water softens the oats perfectly, giving the cake its distinctive texture.
Quick cook oats: Adds heartiness and a lovely chewy bite throughout the cake layers.
All purpose flour: The base structure for the cake, providing a tender crumb.
Ground cinnamon: Brings warm spice and enhances the oatmeal flavor.
Fine sea salt: Balances sweetness and enhances depth of flavor.
Nutmeg: Offers an extra cozy note to the spice blend.
Baking soda: Provides lift for light, fluffy cake layers.
Unsalted butter (room temperature): Gives richness and moisture both in the cake and the frosting.
Granulated sugar: Sweetens and creates tender texture in the cake.
Light brown sugar (packed): Adds subtle caramel notes and warmth to the batter.
Vanilla extract: Enhances overall flavor depth in cake and frosting.
Large eggs (room temperature): Binds ingredients and adds moisture and richness.
Full-fat sour cream (room temperature): Keeps the cake moist with a slight tanginess.
Powdered sugar: Vital for a smooth, fluffy buttercream frosting.
Heavy cream: Lightens buttercream and helps create a creamy, spreadable texture.
Vanilla bean paste: Packs intense vanilla flavor with pretty flecks.
White chocolate chips: Key for the glossy, sweet glaze on top of the cake.
White food coloring (optional): Helps the glaze look bright white instead of yellowish.
Oatmeal cream pie cookies: Perfect decorative garnish, adding texture and a whimsical touch.

Directions

Step 1: Preheat your oven to 350°F (180°C) and line three 8-inch cake pans with parchment paper on the bottoms. This makes releasing the cakes after baking so much easier.

Step 2: Bring 2 1/2 cups of water to a boil in a pot. Stir in 2 cups of quick cook oats and immediately remove the pot from heat. Cover it and let the oats soak for 20 minutes, then allow the oatmeal to cool to room temperature before using it in the batter.

Step 3: While the oatmeal cools, whisk together 2 2/3 cups all purpose flour, 2 teaspoons baking soda, 1 teaspoon salt, 1 tablespoon plus 1 teaspoon ground cinnamon, and 1/2 teaspoon nutmeg in a bowl. Set this dry mixture aside.

Step 4: In a stand mixer fitted with the paddle attachment, beat 1 cup room temperature unsalted butter with 1 cup granulated sugar and 1 cup light brown sugar on medium speed for 5 minutes, until the mixture is light and fluffy. This step is crucial to get a tender cake crumb.

Step 5: Add 1 tablespoon vanilla extract, 3 large eggs (at room temperature), and 1/4 cup full-fat sour cream to the butter and sugar. Mix on medium speed until fully combined, scraping down the sides of the bowl as needed.

Step 6: Mix in the cooled oatmeal until just combined. Then fold in the dry flour mixture gently, mixing until just incorporated. The batter will be very thick—don’t worry, that’s exactly what you want.

Step 7: Divide the batter evenly among the three prepared pans (about 600 grams each). Bake for 20 to 22 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs clinging to it.

Step 8: Let the cakes cool in their pans on a wire rack for 15 minutes, then run a spatula around the edges and carefully invert them onto the rack to cool completely.

Step 9: While the cakes cool, make the buttercream. Beat 2 1/2 cups unsalted butter on medium speed in a clean bowl until light and fluffy, about 3 minutes. Gradually add 4 cups powdered sugar on low speed until combined, then increase speed to medium for another 3-5 minutes.

Step 10: Mix in 2 tablespoons heavy cream, 2 teaspoons vanilla extract, and 1 teaspoon vanilla bean paste. The result should be a smooth, creamy, and fluffy buttercream perfect for assembling and frosting the cake.

Step 11: Place one cake layer on your cake stand or plate. Spread about 1 cup of vanilla buttercream evenly on top. Repeat with the remaining layers, finishing with the top layer upside down for a perfectly flat surface.

Step 12: Apply a thin, even crumb coat of the remaining buttercream all around the sides and top of the cake. Chill the cake briefly to set this layer for easier glazing.

Step 13: Heat 1/4 cup plus 3 tablespoons heavy cream until just simmering, then pour it over 1 cup white chocolate chips in a bowl. Let sit for a couple of minutes, then stir gently until smooth. Add white food coloring if desired for a brighter white glaze. Allow to cool slightly so it won’t melt the frosting when poured.

Step 14: Place your cake on a wire rack with a baking sheet underneath. Pour the white chocolate glaze over the center of the cake, allowing it to drip naturally down the sides. Let the glaze set.

Step 15: Finally, decorate the top of the cake with crumbled oatmeal cream pie cookies and cookie pieces for an eye-catching, delicious finishing touch.

Servings and Timing

This Oatmeal Cream Pie Cake Recipe yields 12 generous servings, perfect for sharing with family and friends. You’ll spend about 30 minutes preparing the batter and frosting plus 20-22 minutes baking. Cooling and assembling take around 1 hour, with additional waiting time for glaze to set. Altogether, you’re looking at approximately 3 hours and 20 minutes from start to finish, allowing for the best textures and flavors to fully develop.

How to Serve This Oatmeal Cream Pie Cake Recipe

The image shows a three-layer cake with light brown sponge layers that look soft and moist. Between each sponge layer is a thick white cream filling that also covers the outside of the cake smoothly. The top of the cake is decorated with pieces of crumbled cookies, which are a darker brown and broken into chunks. The cake sits on a wooden board with a piece of brown paper under it, and the background is a white marbled surface. Photo taken with an iphone --ar 4:5 --v 7

When it comes to serving this cake, I love to keep it simple and let its flavors shine. Serving it at room temperature really brings out the rich creaminess of the buttercream and the soft, tender crumb of the oatmeal cake. I typically cut generous slices, as the cake is quite rich, and it pairs wonderfully with a fresh cup of coffee or a glass of cold milk to balance the sweetness.

If I’m presenting this at a party or holiday gathering, I like to add some extra drama by garnishing each slice with a small dollop of whipped cream and a sprinkle of finely crushed oatmeal cream pie cookie crumbs. The texture contrast adds extra delight. For drinks, a lightly spiced chai or a smooth dessert wine like a Moscato complements the warm spice notes beautifully.

This cake also holds up well chilled, which makes it a great make-ahead dessert for dinner parties. Simply bring it to room temperature before serving to get that perfect softness. When plating, I recommend thick slices since the layers are satisfying and the flavors rich, but if you want, you can also serve smaller portions as part of a dessert buffet for your guests to sample multiple sweets.

Variations

If you want to tweak this Oatmeal Cream Pie Cake Recipe to suit your preferences or dietary needs, I have a few ideas that I’ve tried or been eager to test. For a gluten-free version, swapping the all purpose flour with a 1:1 gluten-free baking blend works nicely, just double-check that your oats are certified gluten-free. The texture will be just as tender and delicious.

For those looking to make it vegan, I recommend substituting the butter with a high-quality vegan margarine or coconut oil, using flax eggs or a commercial egg replacer, and swapping the sour cream for a tangy vegan yogurt. The white chocolate glaze can be replaced with a vegan white chocolate or coconut glaze. The flavor will be just as luscious but dairy and egg-free.

Flavor-wise, I love experimenting by adding toasted pecans or shredded coconut into the batter for added texture and a nutty twist. You can also swap out the vanilla bean paste in the frosting for almond or maple extracts for a unique flavor profile. If you are feeling adventurous, try baking the batter in cupcake liners as a grab-and-go treat that’s just as delightful!

Storage and Reheating

Storing Leftovers

I always store leftover cake wrapped tightly in plastic wrap or in an airtight container in the refrigerator to keep the frosting fresh and prevent the cake from drying out. When properly stored, the cake will stay delicious for up to 4 days. Keeping it chilled helps maintain the white chocolate glaze’s smooth texture.

Freezing

This cake freezes beautifully, making it perfect for preparing ahead of time. To freeze, wrap the cake tightly in plastic wrap and then in aluminum foil to prevent freezer burn. You can freeze it whole or in individual slices. It will keep well frozen for up to 3 months. When ready to enjoy, thaw overnight in the refrigerator before bringing to room temperature.

Reheating

Since this is a frosted cake, reheating is best avoided, but if you prefer your cake slightly warm, I suggest letting it come to room temperature before serving rather than microwaving it. If you must reheat, warm individual slices gently in the microwave for 10-15 seconds on low power, being careful not to melt the frosting or glaze. This method keeps the delicate textures intact.

FAQs

Can I use rolled oats instead of quick cook oats?

Yes, you can substitute rolled oats, but I recommend pulsing them lightly in a food processor to slightly break them down so they cook within the soaking time and blend better into the batter. Using regular rolled oats without modification may result in a chewier, denser texture than intended.

Do I need to use the white food coloring in the glaze?

No, the white food coloring is optional and only used to make the glaze look more bright white instead of a soft yellow. The flavor is unaffected, so if you don’t have any on hand or prefer natural colors, your glaze will still be delicious and beautifully glossy.

Can I make this cake a day in advance?

Absolutely! In fact, I recommend making this cake a day ahead. It gives the flavors time to meld and the frosting to set perfectly. Just keep it refrigerated in an airtight container and bring it to room temperature before serving for the best flavor and texture.

What type of cake pans should I use?

I always use three 8-inch round cake pans for this recipe to obtain evenly sized layers. You should line the bottoms with parchment paper to help the cakes release easily. If you don’t have three pans, you can bake in batches, but the layers should be the same size for best stacking results.

Can I substitute sour cream with yogurt?

Yes, full-fat plain Greek yogurt or regular yogurt is a great substitute for sour cream and will maintain moisture and a slight tang in the cake. Just be sure it is at room temperature to combine well without curdling.

Conclusion

I truly hope you give this Oatmeal Cream Pie Cake Recipe a try because it has quickly become one of my favorite ways to celebrate simple, comforting flavors in an elegant form. Whether you’re baking for a special occasion or just treating yourself, this cake rewards you with moist, spiced layers and creamy vanilla frosting that everyone will adore. Trust me, once you experience these flavors combined, it’s bound to become a beloved recipe in your collection.