Name: Oatmeal Cream Pie Cake Recipe
Prep time: 30 min
Cook time: 22 min
Total time: 1 h 15 min
Cuisine: American
Ingredients: 2 1/2 cups (575 g) water; 2 cups (180 g) quick cook oats, uncooked; 2 2/3 cups (226 g) all purpose flour; 1 tbsp + 1 tsp ground cinnamon; 1 teaspoon fine sea salt; 1/2 tsp nutmeg; 2 teaspoons baking soda; 1 cup (226 g) unsalted butter, room temperature; 1 cup (200 g) Domino® Granulated Sugar; 1 cup (200 g) Domino® Light Brown Sugar, packed; 1 tbsp vanilla extract; 3 large eggs (150 g), room temperature; 1/4 cup (65 g) full-fat sour cream, room temperature; 2 1/2 cups (565 g) unsalted butter, room temperature; 4 cups (450 g) powdered sugar; 2 tbsp heavy cream; 2 tsp vanilla extract; 1 tsp vanilla bean paste; 1 cup (165 g) white chocolate chips; 1/4 cup + 3 tbsp (85 g) heavy cream; White food coloring (optional); Oatmeal cream pie cookies, for decorating

Jump to Recipe· 3.9 from 66 reviews

This Oatmeal Cream Pie Cake Recipe is an absolute showstopper that brings the nostalgic charm of classic oatmeal cream pies into a stunning layered cake form. Imagine moist, warmly spiced oatmeal cake layers sandwiching luscious vanilla buttercream, all crowned with a glossy white chocolate glaze and decorated with crumbly oatmeal pie cookies. Every bite offers a perfect balance of cozy oatmeal texture and rich creamy sweetness that feels like a hug on a plate. Whether you’re celebrating a special occasion or simply craving a comforting treat, this cake will quickly become a favorite in your baking repertoire.

Ingredients You’ll Need

The image shows a white marbled surface with 12 small white bowls and containers arranged neatly, each filled with a different baking ingredient. At the top left is a bowl with light brown sugar, next to it a small white container with dark brown vanilla liquid, and to the right a bowl with white sour cream. Below them, a bowl with white sugar is placed beside a glass of clear water. In the center is a larger bowl filled with white flour. Below it, from left to right, are a bowl of white chocolate chips, a stick of pale yellow butter wrapped in paper, and a bowl with three yellow yolks in clear egg whites. To the lower left are a bowl with light oats and a small plate with brown cinnamon powder. At the bottom center is a glass with clear egg whites. The arrangement is clean, showing each ingredient clearly on a white marbled surface. Photo taken with an iphone --ar 4:5 --v 7

This recipe uses simple, pantry-friendly ingredients that work harmoniously to create a delightful medley of flavors and textures. Each component plays a crucial role—from the oats adding heartiness and chew, to the spices imbuing warmth, and the frosting providing that irresistible creamy element.

Water: Essential for soaking the oats to achieve a tender, moist cake crumb.

Quick cook oats: Provide texture and the signature oatmeal flavor in the cake layers.
All-purpose flour: The foundation that gives structure to the cake.
Ground cinnamon: Adds a fragrant, cozy spice note that makes the cake truly comforting.

Fine sea salt: Enhances all the sweet and savory flavors in perfect balance.
Nutmeg: Offers a subtle warm spice to complement the cinnamon.
Baking soda: Gives the cake its gentle rise and light texture.

Unsalted butter: Brings richness and a smooth crumb to both cake and frosting.
Granulated sugar: Sweetens the cake with a clean, crisp sweetness.
Light brown sugar: Adds moisture and a hint of caramel depth to the cake batter.

Vanilla extract: Infuses a sweet, fragrant aroma throughout.
Large eggs: Bind ingredients together and add richness.
Full-fat sour cream: Adds tang and moisture, keeping the cake tender.
Powdered sugar: The base of the silky vanilla frosting.
Heavy cream: Makes the frosting luxuriously creamy and light; also used in the glaze.
Vanilla bean paste: Intensifies the vanilla flavor in the frosting.

White chocolate chips: Key for creating the luscious white chocolate glaze topping.
White food coloring (optional): Brightens the glaze color for a more pure white finish.
Oatmeal cream pie cookies: Perfect for crumbling on top to decorate and echo the cake’s inspiration.

How to Make Oatmeal Cream Pie Cake Recipe

Step 1: Prepare the Oatmeal Base

Begin by bringing the specified amount of water to a boil, then stirring in the quick cook oats. Remove the pot from heat and cover it, letting the oats soak for 20 minutes until tender and creamy. This step ensures those oats do not dry out during baking but instead provide a luscious texture inside the cake.

Step 2: Mix the Dry Ingredients

While the oats soak and cool to room temperature, whisk together the flour, cinnamon, sea salt, nutmeg, and baking soda in a large bowl. This blend of spices and leavening agents is what helps deliver that perfect spice-infused rise for the cake.

Step 3: Cream Butter and Sugars

Using a stand mixer fitted with a paddle attachment, beat the unsalted butter and both sugars at medium speed for about five minutes until the mixture is light and fluffy. This aeration is critical because it creates a tender, airy crumb that bakes up beautifully.

Step 4: Combine Wet Ingredients

Add vanilla extract, the eggs one at a time, and the sour cream to the creamed butter and sugar. Mixing slowly now allows the ingredients to emulsify smoothly and prepares the batter for the oats and flour.

Step 5: Incorporate Oats and Flour

Mix in the cooled oats gently until just combined, then fold in the dry ingredient mixture carefully. The batter will be thick, which is exactly what you want to capture that hearty oatmeal texture in each cake layer.

Step 6: Bake the Cake Layers

Divide the batter evenly among three prepared 8-inch cake pans, smoothing the tops. Bake at 350°F (180°C) for 20-22 minutes, or until a toothpick inserted comes out with a few moist crumbs clinging. Allow cakes to cool in the pans before turning them out onto a wire rack to cool completely.

Step 7: Prepare the Vanilla Buttercream Frosting

Cream the unsalted butter until light and fluffy, then gradually add powdered sugar on low speed. Once blended, beat at medium speed for about 3-5 minutes, adding heavy cream, vanilla extract, and vanilla bean paste. The result is a smooth, luscious frosting perfect for layering and covering the cake.

Step 8: Assemble the Cake

Place one cake layer on your serving stand and spread about one cup of frosting evenly over it. Repeat layering cake and frosting, finishing with the last cake layer upside down to create a smooth top surface.

Step 9: Frost the Cake

Apply a thin crumb coat of frosting all around the sides and top, then set the cake aside while preparing the glaze.

Step 10: Make and Apply the White Chocolate Glaze

Heat the heavy cream and pour it over the white chocolate chips, stirring until smooth. Optionally, add white food coloring to make the glaze perfectly white. Let it cool slightly before pouring evenly over the cake placed on a wire rack to allow the glaze to drip down the sides elegantly.

Step 11: Decorate with Oatmeal Cream Pie Cookies

Top the cake with crumbled oatmeal cream pie cookies or small cookie pieces to echo the flavors and textures that inspired this delightful cake.

How to Serve Oatmeal Cream Pie Cake Recipe

A three-layer cake sits on a white wooden plate with smooth white frosting covering the top and sides, revealing two thin layers of brown cake peeking through the frosting around the middle. A creamy white glaze is dripping slightly down the sides from the top layer, which is neat and even. On top, there is a cluster of broken golden brown cookies arranged around the edge, with some cookie crumbs scattered nearby. The whole setup is on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Garnishes

Adding a sprinkle of additional oatmeal pie cookie crumbs or a light dusting of cinnamon on the glaze not only makes the cake look irresistible but also enhances that warm spice aroma with every bite.

Side Dishes

This cake pairs exceptionally well with a simple dollop of freshly whipped cream or a scoop of vanilla bean ice cream, elevating the creamy, nostalgic flavors even further. A hot cup of coffee or chai tea is the perfect companion to balance the sweetness.

Creative Ways to Present

Slice the cake into generous wedges and present them alongside mini oatmeal cream pie cookies for a themed dessert platter. You can also serve small individual portions layered in clear glasses showing the distinct layers for an elegant touch at parties.

Make Ahead and Storage

Storing Leftovers

Cover leftover Oatmeal Cream Pie Cake tightly with plastic wrap or store it in an airtight container in the refrigerator. It will stay fresh and moist for up to 4 days, making it an excellent treat to enjoy over multiple days.

Freezing

This cake freezes beautifully, whether sliced or whole. Wrap it well with multiple layers of plastic wrap and place it in a freezer-safe container. Frozen, it will maintain quality for up to 2 months. Thaw overnight in the fridge before serving.

Reheating

If you prefer the cake at room temperature, remove it from the fridge about an hour before serving. Avoid microwaving to keep the frosting and glaze from melting.

FAQs

Can I use old-fashioned oats instead of quick cook oats?

While quick cook oats soften nicely during soaking, old-fashioned oats may create a coarser texture. If using old-fashioned oats, soak them longer or briefly pulse in a food processor to break them down.

Is there a substitute for sour cream in the recipe?

You can substitute sour cream with full-fat Greek yogurt or buttermilk. These alternatives will maintain the tang and moisture crucial for the tender crumb.

Can I make this cake gluten-free?

Absolutely! Substitute all-purpose flour with a 1-to-1 gluten-free baking flour blend. Ensure it contains xanthan gum for proper structure, or add it separately.

How do I achieve the best white chocolate glaze consistency?

Heat the cream gently and pour it over the white chocolate chips, stirring slowly until smooth. Let it cool slightly before pouring to ensure it’s thick enough to coat but not so hot that it melts the frosting beneath.

Why should the top cake layer be placed upside down?

Flipping the top layer upside down creates a flat surface that makes frosting and glazing easier, resulting in a polished, professional finish.

Final Thoughts

This Oatmeal Cream Pie Cake Recipe is a heartwarming bake that perfectly captures the joy of a beloved classic cookie in an elegant yet approachable cake form. If you love the idea of cozy spices, tender oats, and luscious vanilla cream all mingling together, then this cake is absolutely meant for your kitchen. Give it a try and watch how quickly it becomes a talked-about favorite at your gatherings!