Oatmeal Cream Pie Cake

If you love the nostalgic flavors of oatmeal cream pies, this Oatmeal Cream Pie Cake will be your new favorite dessert! Soft, spiced oatmeal cake layers sandwich a fluffy, creamy filling that tastes just like the classic snack. Perfect for birthdays, holidays, or any time you want a comforting, sweet treat!

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Why You’ll Love This Recipe

• Classic Flavors in Cake Form – Inspired by the beloved oatmeal cream pie
• Soft and Moist – The oatmeal cake is perfectly tender with warm spices
• Fluffy Cream Filling – A dreamy, marshmallow-like center
• Perfect for Any Occasion – Great for parties, family gatherings, or weekend baking

Ingredients You’ll Need

For the Oatmeal Cake:

• Old-fashioned oats (1 ½ cups) – Adds texture and heartiness
• Boiling water (1 cup) – Helps soften the oats for a tender crumb
• Unsalted butter (½ cup, softened) – Adds richness
• Brown sugar (1 cup) – Brings deep, caramel-like sweetness
• Granulated sugar (½ cup) – Balances the sweetness
• Eggs (2) – Helps bind everything together
• All-purpose flour (1 ½ cups) – The base of the cake
• Baking soda (1 tsp) – Helps the cake rise
• Cinnamon (1 tsp) – Warm spice for classic oatmeal flavor
• Nutmeg (½ tsp) – Adds depth
• Salt (½ tsp) – Enhances all the flavors
• Vanilla extract (1 tsp) – Brings out the sweetness

For the Cream Filling:

• Unsalted butter (½ cup, softened) – Creamy and rich
• Marshmallow fluff (1 cup) – The secret to that classic filling flavor
• Powdered sugar (1 cup) – Adds sweetness and structure
• Heavy cream (2 tbsp) – Makes the filling fluffy
• Vanilla extract (1 tsp) – Enhances the flavor

For the Frosting (Optional):

• Cream cheese (4 oz, softened) – Adds a tangy contrast
• Butter (¼ cup, softened) – Smooth and creamy
• Powdered sugar (1 ½ cups) – Sweet and fluffy
• Vanilla extract (1 tsp) – Ties it all together

Tools You’ll Need

• Mixing bowls
• Hand or stand mixer
• 9-inch cake pans (2)
• Spatula for spreading filling

How to Make Oatmeal Cream Pie Cake

1. Prepare the Oatmeal Mixture
In a bowl, pour boiling water over the oats and let them sit for 10 minutes to soften.

2. Make the Cake Batter
In a large bowl, beat the butter, brown sugar, and granulated sugar until light and fluffy. Add the eggs and vanilla, mixing until smooth. Stir in the softened oat mixture.

3. Combine Dry Ingredients
In a separate bowl, whisk together flour, baking soda, cinnamon, nutmeg, and salt. Gradually mix the dry ingredients into the wet ingredients until just combined.

4. Bake the Cake
Preheat oven to 350°F (175°C). Grease two 9-inch cake pans and divide the batter evenly. Bake for 25–30 minutes or until a toothpick inserted in the center comes out clean. Let cakes cool completely.

5. Make the Cream Filling
Beat the butter until smooth. Add marshmallow fluff, powdered sugar, heavy cream, and vanilla, mixing until light and fluffy.

6. Assemble the Cake
Spread the cream filling evenly over one cake layer. Place the second layer on top.

7. Frost the Cake (Optional)
For an extra indulgent touch, make the frosting by beating cream cheese, butter, powdered sugar, and vanilla together. Spread over the cake or just on top for a semi-naked look.

8. Serve and Enjoy!
Slice and enjoy this nostalgic, bakery-style Oatmeal Cream Pie Cake!

What to Serve with This Cake

• A warm cup of coffee or tea
• A scoop of vanilla ice cream
• A drizzle of caramel sauce for extra decadence

Tips for the Best Oatmeal Cream Pie Cake

• Let the Oats Soften – This keeps the cake extra moist
• Don’t Overmix – Stir just until combined for a tender crumb
• Chill the Cream Filling – Makes it easier to spread and keeps it fluffy
• Make Ahead – Bake the cake layers a day before assembling for easy prep

Storing Leftovers

• Refrigerate – Store in an airtight container for up to 5 days
• Freeze – Wrap slices in plastic wrap and freeze for up to 3 months

Frequently Asked Questions

Can I make this as cupcakes?
Yes! Bake at 350°F (175°C) for 18–20 minutes in a lined muffin tin.

Do I have to use marshmallow fluff?
For a similar taste, you can mix whipped cream with powdered sugar, but the fluff gives it that classic texture.

Can I add raisins?
Absolutely! Add ½ cup of chopped raisins to the batter for an even more nostalgic touch.

Conclusion

This Oatmeal Cream Pie Cake is the ultimate dessert for anyone who loves the flavors of the classic snack. With soft oatmeal cake layers and a dreamy, fluffy cream filling, it’s sure to be a hit at any gathering!

Tried this recipe? Leave a review below and share your photos on Pinterest!

Preparation Time: 15 minutes
Cooking Time: 30 minutes
Cuisine: American

Nutritional Information (Per Serving):
Calories: 420 | Protein: 5g | Carbohydrates: 55g | Fat: 20g | Fiber: 2g | Sodium: 280mg

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