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Ingredients
- Topping:
- 2 sticks (1 cup) salted butter, melted
- 1/2 cup granulated sugar
- 1/2 cup packed brown sugar
- 2 egg yolks
- 1 teaspoon water
- 1 teaspoon vanilla extract
- 2 cups all-purpose flour
- 1 teaspoon baking powder
- 1/4 teaspoon baking soda
- 1/4 teaspoon salt
- 2 cups semi-sweet chocolate chips
- 2 egg whites
- 1 cup packed brown sugar
Preparation
Step 1
Step 1: Preheat oven to 350 degrees F.
Step 2: Lightly grease a 13x9x2-inch baking pan; set aside.
Step 3: In a medium bowl, whisk together flour, baking powder, baking soda, and salt; set aside.
Step 4: In a large bowl, cream butter and sugars with an electric mixer set on medium-high.
Step 5: Beat in egg yolks, water, and vanilla extract; mix well.
Step 6: Add flour mixture until combined.
Step 7: Spread into prepared 13x9x2-inch baking pan.
Step 8: Sprinkle with chocolate chips.
Step 9: In medium bowl, beat egg whites until stiff peaks form.
Step 10: Gradually fold in brown sugar and mix well.
Step 11: Spread evenly over chips.
Step 12: Bake for 25-30 minutes or until golden brown. Cool completely before cutting into bars. Store in refrigerator.