Boston Cream Pie Sheet Cake
Author: Nikki
A simple and delicious yellow cake with an incredible cream layer and smooth chocolate frosting to top it off! This serves a crowd and will be a huge hit wherever it goes!
  • 1 box yellow cake, dry
  • 1 small instant vanilla pudding
  • ½ cup sour cream
  • ¾ cup vegetable oil
  • ¾ cup water
  • ½ cup sugar
  • 4 eggs
  • 1 teaspoon vanilla
Cream filling
  • 2 large boxes instant vanilla pudding, dry not prepared
  • 2 cups half and half
  • 2 cups whipping cream
Chocolate frosting
  • 1½ cups semi sweet chocolate chips
  • ½ cup half and half
  • ½ cup powdered sugar
  1. Preheat oven to 350 degrees F.
  2. In a large mixing bowl mix all ingredients together on high.
  3. Pour batter into a 10 x 15 inch jelly roll pan and bake at 350 degrees F for 30 to 35 minutes.
  4. Let cool.
Cream Filling
  1. In a medium mixing bowl, combine all filling ingredients and mix well until it begins to thicken.
  2. Refrigerate until ready to assemble.
Chocolate Frosting
  1. In a medium microwavable bowl, melt chocolate and half and half in microwave in 30 second increments, stirring between each increment until chocolate is melted.
  2. Stir in powder sugar until smooth.
Cake Assembly
  1. Spread cream filling over cooled cake.
  2. Carefully spread chocolate frosting over cake.
  3. Refrigerate for 1 hour before serving.
Recipe by Chef in Training at