Three-Cheese Pie
["1 c. shredded Cheddar cheese", "1 c. shredded Mozzarella cheese", "1 c. shredded Monterey Jack cheese", "1 medium onion, chopped", "2 Tbsp. all-purpose flour", "1/2 tsp. dry mustard", "1/2 tsp. Worcestershire sauce", "2 medium tomatoes, sliced", "4 eggs", "1 c. milk", "1/2 tsp. salt"]
["Mix cheeses, onion and flour.", "Spread in greased pie plate (10 x 1 1/2-inch).", "Beat eggs slightly; beat in milk, salt, mustard and Worcestershire sauce.", "Pour over cheese mixture.", "Cook, uncovered, in a 350\u00b0 oven until set, 35 to 40 minutes.", "Let stand 10 minutes. Arrange tomato slices around edge of pie, overlapping slices slightly."]
["Cheddar cheese", "Mozzarella cheese", "shredded Monterey Jack cheese", "onion", "flour", "dry mustard", "Worcestershire sauce", "tomatoes", "eggs", "milk", "salt"]