1 (12 ounce) package white cake mix
1 (3.9 ounce) package non-instant chocolate pudding mix
1 (14 ounce) can sweetened condensed milk
5 tablespoons cornstarch
3 cups heavy cream
1/2 cup white sugar
2 tablespoons all-purpose flour
1 teaspoon vanilla extract
1/2 teaspoon ground cinnamon
Preheat oven to 350 degrees F (175 degrees C). Grease and flour three 8-inch pie pans.
Combine cake mix, pudding mix, and sweetened condensed milk in a medium bowl. Stir well to combine. Fold into prepared pans. Pour 1/2 cup of batter into pan. Bake in the preheated oven for 18 to 22 minutes, or until a knife inserted into the center comes out clean.
Pour remaining batter into pan. Bake 15 to 20 minutes. Cool 10 minutes before serving.
In a medium bowl, beat cream with 2 tablespoons sugar and 2 tablespoons flour until light and fluffy. Stir in vanilla extract and cinnamon. Serve warm.