Beat 2 cups brown sugar (packed) with 1 cup butter or margarine until creamy. (mrsjanuary.com)
To make the filling, cream 3 tablespoons butter or margarine with the powdered sugar. (easydessert.org)
Some monkey bread recipes call for 1/2 cup of butter or margarine instead of 1 cup, but the added margarine makes this bread especially caramel - y. (nowheymama.com)