Combine eggs and egg whites with next 10 ingredients in a medium bowl; whisk until well-blended.
3
Spoon about 1 tablespoon egg mixture into each cup of a lightly greased mini muffin pan. Bake 13 to 15 minutes or until lightly browned. Cool in pans on wire racks 5 minutes. Remove from pans; top each quiche with about 1/2 teaspoon sour cream, and garnish, if desired. Serve quiches warm or at room temperature.