• Preheat oven to 350 degrees.

For the brownies:

• Spray a 9x9 baking pan with non-stick cooking spray.
• Using a stand mixer with a paddle attachment, beat sugar and room temperature butter. Add egg and vanilla extract, incorporating slowly. Then add the melted (cooled) chocolate and applesauce, combine well.
• In a large bowl, mix together flour, cocoa powder, and salt. Working in batches, slowly add the dry ingredients to wet until fully combined.
• Take the batter and spread it evenly into pan. You may have to spray your spatula with non-stick cooking spray because the batter is pretty darn thick.
• Bake for about 20 minutes. Cool the brownies before you cut and dollop with marshmallow frosting and sprinkles.

For the marshmallow frosting:

• In a stand mixer with a whisk attachment, beat 2 egg whites with salt until frothy. Gradually add sugar, beating until soft peaks form.
• Heat syrup in a glass microwaveable dish until it boils. Pour syrup in thin stream over egg white mixture, a little at a time. Beating on high speed until harder peaks form.
• Add vanilla and beat until glossy!