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Seafoam Squares


Dry Ingredients

  • 2 cups all purpose flour
  • 1 teaspoon baking soda
  • 2 teaspoons baking powder
  • 1 teaspoon sea salt

Sugar and Butter

  • 1/2 cup butter (softened)
  • 1/2 cup granulated sugar
  • 1/2 cup brown sugar

Wet Ingredients

  • 2 egg yolks
  • 3 tablespoons milk
  • 1 teaspoon vanilla

Other Layers

  • 4 egg whites
  • 1 cup brown sugar
  • 320 grams dark chocolate chips


  • Preheat the oven to 325F.
  • Sift the dry ingredients together in a medium bowl and set aside.
  • Using a hand blender, beat the butter and sugars together until light and creamy.
  • Whisk the wet ingredients together and add to the butter and sugar, blending until smooth.
  • Add the flour mix, in batches, beating in until incorporated. You will end up with a large-chunk dough.
  • Butter or cooking spray a 9x13 pan and press the dough into a flat layer.
  • Sprinkle the dough with the chocolate chips in an even layer.
  • Beat the egg whites until stiff peaks form.
  • Add the brown sugar 1/3 of a cup at a time, beating until smooth.
  • Drizzle over the chocolate chips as evenly as possible. At this point, I spread out as evenly as possible using a combination of a small spatula and my fingers.
  • Bake for 30-35 minutes, until the top is hard and sounds hollow when lightly tapped.