Ingredients for 1 servings:
1. 1 cup brown sugar, firmly packed
2. 1 cup butter
3. 2 cups flour
4. 1 large egg yolk
5. chocolate chips, to top
Directions:
1. Mix all ingredients (except chocolate chips) with hands until it forms a dough.
2. Pat into bottom of a 9×13 pan.
3. Bake at 375°F degrees for 25 minutes.
4. Sprinkle with chocolate chips.
5. Cover pan with a larger bread board to keep the heat inside.
6. Spread the chocolate when it has melted.
7. Cool completely before cutting.