Cinnamon Clouds

Makes about 20 cookies.

2 egg whites, at room temperature
Dash of salt
1/2 teaspoon ground cinnamon
1/2 cup packed light-brown sugar
1/3 cup mini chocolate chips (optional)

Preheat oven to 275 degrees F. Line 2 cookie sheets or baking pans with parchment paper.

Put egg whites and salt in a medium mixing bowl. Beat with electric mixer until soft peaks form (about 2 minutes). Add cinnamon, and slowly add sugar (in three or four parts), beating at high speed as you do. Continue to beat until stiff peaks form (about 5 minutes). If using chocolate chips, carefully fold them in. Scoop out little mounds onto the cookie sheets - about 1 1/4 inches wide and 1 inch apart. Don't make them too large.

Bake at 275 degrees F until the outsides are dry, but the insides are still soft (about 40 minutes). Then turn off the oven and leave them for another 90 minutes - don't open the oven during this time. They will dry out completely.