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Oatmeal Cream Pie Cake
Maya

Oatmeal Cream Pie Cake

This Oatmeal Cream Pie Cake is inspired by the classic snack cake, featuring soft spiced oatmeal cake layers, a fluffy vanilla cream filling, and a smooth white chocolate glaze. Perfect for celebrations and nostalgic dessert lovers.
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Prep Time 40 minutes
Cook Time 22 minutes
Total Time 3 hours
Servings: 12 slices
Course: Dessert
Cuisine: American
Calories: 620
Ingredients Equipment Method Notes

Ingredients
  

  • 2 1/2 cups water
  • 2 cups quick-cook oats, uncooked
  • 2 2/3 cups all-purpose flour
  • 1 tbsp + 1 tsp ground cinnamon
  • 1 tsp fine sea salt
  • 1/2 tsp nutmeg
  • 2 tsp baking soda
  • 1 cup unsalted butter, room temperature
  • 1 cup granulated sugar
  • 1 cup light brown sugar, packed
  • 1 tbsp vanilla extract
  • 3 large eggs, room temperature
  • 1/4 cup full-fat sour cream
  • 2 1/2 cups unsalted butter, room temperature (filling)
  • 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 (glaze)

Equipment

  • Stand mixer
  • 8-inch cake pans
  • Saucepan
  • Mixing bowls
  • Wire rack

Method
 

  1. Preheat oven to 350°F (180°C). Line three 8-inch cake pans with parchment paper.
  2. Boil water, stir in oats, remove from heat, cover, and let sit for 20 minutes. Cool completely.
  3. Whisk flour, baking soda, salt, cinnamon, and nutmeg together.
  4. Beat butter and sugars until light and fluffy. Add vanilla, eggs, and sour cream.
  5. Mix in cooled oats, then gently fold in dry ingredients.
  6. Divide batter evenly into pans and bake 20–22 minutes until a toothpick has moist crumbs.
  7. Beat butter for filling until fluffy. Add powdered sugar, cream, vanilla, and vanilla bean paste.
  8. Assemble cake layers with filling, finishing with the top layer upside down. Frost evenly.
  9. Heat cream and pour over white chocolate chips. Add food coloring if desired and cool slightly.
  10. Pour glaze over cake and decorate with oatmeal cream pie cookies.

Notes

Allow the cooked oatmeal to cool completely before mixing. Chill the cake slightly before glazing for cleaner drips. Oatmeal cream pie cookies make the best decorative finish.