- 2 cup all-purpose flour
- 1 teaspoon baking powder
- 1/4 teaspoon baking soda
- pinch of salt
- 1 cup (2 sticks or 8 oz.) unsalted butter, at room temperature
- 1/2 cup granulated sugar
- 1 and ½ cups brown sugar
- 2 large eggs at room temperature, separated
- 1 teaspoon vanilla extract
- 12 ounce semi-sweet chocolate chips
- Preheat oven to 350 and grease a jelly roll or half sheet pan.
- Sift dry ingredients together in a bowl and set aside.
- In a standing mixer, cream the butter with the granulated sugar and ½ cup of the brown sugar until light and fluffy.
- Add the egg yolks one at a time and the vanilla extract and incorporate into the batter.
- Gradually add the dry ingredients.
- The resulting batter will be stiffer than a typical cookie dough. (If the dough is sticky, you can spray your fingers with a little bit of nonstick cooking spray or dust them with flour.)
- Press the dough onto the greased jelly roll pan.
- Sprinkle the chocolate chips evenly over the dough in the pan and press into the dough slightly.
- If possible, place pan in the freezer while you make the meringue.
- In another bowl, beat the egg whites until stiff.
- Gradually, one tablespoon at a time, add the remaining cup of brown sugar to the egg whites and beat until the meringue is glossy and holds soft peaks. (It won't be as stiff as a meringue made with superfine sugar, and that is OK.)
- Spread the resulting meringue over the top of dough and chocolate chips.
- Bake for approximately 20 minutes until the top is golden brown.
- Cool on a wire rack before cutting into squares.