(by Shirley McNevich)
Butterscotch Sauce: 1/4 cup butter; 3/4 cup Domino's dark brown sugar (packed); 3/4 cup heavy cream; 2 tsp. vanilla; 1/2 tsp. salt
Cupcake Batter: 1 2/3 cups flour; 1/2 tsp. baking powder; 1/4 tsp. baking soda; 1/2 tsp. salt; 1 cup Domino's dark brown sugar (packed); 1/2 cup butter (melted); 1 egg; 1/4 cup Breakstone's sour cream; 3/4 cup milk; 1 TBSP vanilla
White Frosting: 2 sticks softened butter; 3-4 cups Domino's powdered sugar; 1/4 cup heavy cream; 2 1/2 tsp. vanilla; a pinch of salt
In a saucepan over medium heat add 1/4 cup butter--melt. While stirring add 3/4 cup brown sugar until dissolved. While stirring add heavy cream until mixed--let mixture cook/thicken for 5 minutes. Remove from heat--add 2 tsp. vanilla and 1/2 tsp. salt--stir well. Let the mixture cool to room temperature.
Cupcake batter: in a bowl add flour, baking powder, baking soda and salt--stir to mix. In a mixer add the brown sugar and melted butter--beat. Add egg, sour cream, milk and vanilla--beat. Slowly add flour mixture--beat. Place cupcake liners into muffin tins--fill each 2/3 full with batter. Bake at 350 degrees 18-20 minutes--test with a toothpick for doneness. Cool completely.
Frosting: in a mixer add the softened butter--beat. Add heavy cream, vanilla and salt--beat. Slowly add powdered sugar--beat until thick and creamy. Fill an empty plastic squeeze bottle (must have a tip) with the butterscotch mixture. Stab the tip of the squeeze bottle into the center of one of the cooled cupcakes--squeeze a penny-sized amount of butterscotch into the cupcake. Repeat with all cupcakes. Frost the cupcakes with the vanilla frosting. If you have butterscotch mixture left over, drizzle butterscotch over the frosting on each cupake.