- 1 pound butter, softened
- 1 cup brown sugar
- 1 cup granulated sugar
- 2 eggs
- 2½ cups all-purpose Four
- 2½ cups rolled oats
- 16 ounces chocolate morsels
- 4 ounces (1 stick) butter
Preheat the oven to 350 degrees. Prepare a 12” X 16” half-sheet pan (or 2 9” X 12” pans) by lining with parchment or buttering and flouring.
Cream the butter using a stand mixer. Add the sugar and beat until light. Beat in the eggs thoroughly. Blend in the flour and oats.
Bake for 30 minutes. If the center is still pale, turn the oven down to 325 degrees and bake another 10 minutes. Allow the bars to cool in the pan while you make the frosting.
Put the frosting ingredients in a bowl over very hot, not boiling, water. Stir occasionally. When fully melted, spread evenly onto bars, and allow to cool thoroughly.
Makes 24 massive bars or 96 modest ones.