Tuna Melt Pie

Directions

Heat oven to 400℉ (200℃).

Grease square baking dish , 8 x 8 x 2 inches.

Cook onions and margarine in 10 inch skillet over low heat, stirring occasionally, until onions are light brown.

Sprinkle tuna, 1 cup of the cheese and the onions in dish.

Beat baking mix, milk, pepper and eggs with wire whisk or hand beater until almost smooth, about 1 minute.

Pour into dish.

Bake until knife inserted in center comes out clean, 25 to 30 minutes.

Top with tomato slices and remaining cheese.

Bake until cheese is melted, 3 to 5 minutes.

Cool 5 minutes.