Preheat oven to 350 degrees F. Grease twelve 2 1/2-inch muffin cups.
Whisk evaporated milk, eggs, flour, salt and black pepper in medium bowl until blended. Stir in cheese, broccoli, bell pepper and tomatoes. Spoon 1/4 to 1/3 cup of mixture into each prepared muffin cup, filling almost to rim*. Stir mixture frequently to evenly distribute ingredients.
Bake for 23 to 28 minutes or until knife inserted near centers comes out clean and tops are lightly browned. Cool in pans for 15 minutes. Run knife or small, flat spatula around inside edges of muffin cups. Carefully remove quiches.
