Flourless Double Fudge Cookies - Chew Nibble Nosh

Ingredients

• 2 1/4 cups powdered sugar
• 1/4 tsp. salt
• 1 tsp. espresso powder, optional
• 1 cup cocoa powder
• 3 large egg whites
• 2 tsp pure vanilla extract (gluten-free)
• 2 cups chocolate chips (or do half and half with chips and nuts)