Thanks for the clue. This could be the recipe.

Milk Chocolate Cheesecake

Top your smooth and creamy cheesecake with generous spoonfuls of whipped cream and fresh strawberries.

Filling:
1 pkg Duncan Hines® Moist Deluxe® Fudge Marble Cake Mix, divided
2 pkgs (8 oz each) Cream cheese
8 oz milk chocolate
3 large eggs
0.67 cup whipping cream

Crust:
Remaining cake mix
1/4 cup butter or margarine, melted

Garnish:
whipping cream
fresh strawberries
Baking Instructions:

Preheat oven to 350F. Grease and flour 13x9x2-inch pan.

For filling, combine contents of cocoa packet from mix, 1/4 cup cake mix, cream cheese and melted chocolate in large bowl. Beat at high speed with electric mixer for 2 minutes. Add eggs and cream. Beat at high speed for 1 minute. Set aside.

For crust, stir remaining cake mix and melted butter in medium bowl. Mixture will be crumbly. Sprinkle mixture into pan. Pour filling over mixture.

Bake at 350F for 30 to 35 minutes. Cool in pan. Refrigerate until chilled.

Garnish individual servings with dollops of whipped cream and strawberries.

Makes about 8 servings
Source: Duncan Hines