Impossibly Easy Tuna, Tomato and Cheddar Pie

 

1

tablespoon butter or margarine

1

large onion, chopped (1 cup)

1

can (5 oz) tuna, drained

1

cup shredded Cheddar cheese (4 oz)

1/2

cup Original Bisquick® mix

1

cup milk

1/8

teaspoon pepper

2

eggs

1

medium tomato, thinly sliced

• 1 Heat oven to 400°F. Spray 9-inch pie plate with cooking spray. In 10-inch skillet, melt butter over low heat. Add onion; cook, stirring occasionally, until tender. Sprinkle tuna, 1/2 cup of the cheese and the onion in pie plate.
• 2 In medium bowl, stir remaining ingredients except tomato with wire whisk or fork until blended. Pour into pie plate.
• 3 Bake 25 to 30 minutes or until knife inserted in center comes out clean. Top with tomato slices and remaining 1/2 cup cheese. Bake 3 to 5 minutes longer or until cheese is melted. Let stand 5 minutes before serving.