Butter and flour a 13 ... mixing bowl, beat cake mix, eggs, buttermilk, bananas, brown ... sprinkle with chopped toffee bars and chopped toasted pecans.
Prepare cake according to package. Stir in 3/4 cup chocolate chips. Pour into greased 9 ... topping. Sprinkle with toffee bits and remaining chocolate chips. Store in refrigerator.
Bake cake according to package directions in ... with the crushed chocolate toffee bars liberally across the entire ... of caramel topping. Refrigerate.