Chocolate Peanut Butter Trifle

I saw this on another blog and had to put it somewhere where I can find it again. Doesn't it look divine?

1 chocolate cake mix

1 pkg. peanut butter chips

4 1/4 C. cold milk, divided

1/2 C. whipping cream

1/4 tsp. vanilla extract

2 small pkgs. Instant Chocolate Pudding Mix

1 small carton Cool Whip

8 Reese’s Peanut Butter Cups

Prepare cake mix according to package directions. Pour the batter into a greased 13 x 9 baking pan. Bake at 350 degrees for 30-35 minutes or until a toothpick inserted near the center comes out clean. Cool completely on a wire rack.In a heavy saucepan, combine chips, 1/4 C. milk and 1/2 C. cream. Cook and stir over low heat until chips are melted. Remove from the heat; stir in vanilla. Cool to room temperature. Place the remaining milk in a mixing bowl; beat in pudding mixes on low speed for 2 minutes. Place pudding in the fridge for 3-4 minutes to set up a bit.To assemble, crumble half of the cake into a 4 qt. Trifle bowl or large bowl. Layer with half of the peanut butter sauce, pudding, Cool Whip and ½ of the crumbled Reese’s Peanut Butter Cups; repeat layers ending with Cool Whip and remaining ½ of crumbled Reese’s Peanut Butter Cups. Cover and refrigerate for at least 3 hours before serving.