Sprinkle some of the Swiss cheese in the pie plate first before adding the ham and egg mixture. The thin layer on the bottom gives you another hit of flavor when you bite into a piece.—Wendy McMillan, Longmont, CO
1. Preheat oven to 350°.
2. Heat a large nonstick skillet over medium-high heat. Coat pan with cooking spray. Add ham, onion, and pepper to pan; sauté 4 minutes or until ham is lightly browned.
3. Sprinkle 1/4 cup shredded Swiss cheese in a 9-inch pie plate coated with cooking spray. Top with ham mixture.
4. Combine remaining 1/2 cup Swiss cheese, spinach, and next 5 ingredients (through egg whites) in a large bowl; stir with a whisk.
5. Lightly spoon flour into a dry measuring cup; level with a knife. Combine flour and baking powder in a small bowl, stirring with a whisk. Add flour mixture to egg mixture, stirring with a whisk until blended. Pour egg mixture over ham mixture. Bake at 350° for 45 minutes or until a knife inserted in center of quiche comes out clean.