4 cups white sugar
4 cups packed light brown sugar
4 teaspoons vanilla extract
4 eggs
1 (10 ounce) package angel food cake mix
3 cups pumpkin puree
1 cup butter
Preheat oven to 375 degrees F (190 degrees C). Grease a 9x13 inch pan.
In a large bowl, mix together sugar, brown sugar, vanilla extract, eggs and orange juice. Beat until smooth. Spread batter into prepared pan.
Bake in preheated oven for 40 minutes, or until a toothpick inserted into center of cake comes out clean. Cool in pan on wire rack for 15 minutes. Remove from oven, cool completely and frost.
To make the filling: In a large bowl, mix together pumpkin, butter and brown sugar until smooth. Spread evenly over cake.