Heath Bar Cake Frosting. Cream butter and powdered sugar. Using a hand or stand mixer, mix on low speed for 1 minute and then on medium for 1.
Put frosting on split half of cake. Perhaps you are familiar with. The secret to great heath bar cake is the caramel infusion of the cake layer which keeps it nice and moist and delicious!
Combine butter, brown sugar, and flour until the mixture is crumbly.
Prepare frosting, pipe and top with chopped heath bar chunks. Take out 1/2 cup of the mixture. Combine butter, brown sugar, and flour until the mixture is crumbly. Put aside 1 cup of the crumb mixture.