Instructions

  1. Melt chocolate chips and butter in the microwave about 45 seconds; stirring occasionally until completely melted; set aside.
  2. Combine the dry ingredients, except for sugar, in a bowl.
  3. In another large bowl, beat egg whites with sugar and vanilla until slightly thick.
  4. Stir in chocolate mixture and then the dry ingredients.
  5. Spread into an 8-inch square baking dish sprayed with cooking spray.
  6. Bake at 350° for 25-30 minutes; until edges are firm and top is crisp.
  7. Cool completely before cutting into bars.