Cottage Cheese Pancakes with Lemon

Beat egg whites on medium-high speed until foamy. Add cream of tartar; beat until stiff, glossy peaks form.

Heat a griddle or large skillet over medium-high heat. Stir together yolks, cottage cheese, granulated sugar, flour, baking powder, salt, and cinnamon in a medium bowl. Whisk in one-third of the whites. In two batches, gently fold in remaining whites with a rubber spatula.

Spray griddle with cooking spray; heat until a drop of batter sizzles upon contact. Working in batches, pour 1/4 cup batter per pancake onto griddle; cook until surfaces bubble and edges are slightly dry, about 1 minute. Flip pancakes; cook until undersides are golden brown, about 3 minutes more. Divide confectioners' sugar among pancakes. Serve sprinkled with lemon zest and with lemon wedges on the side.