Impossible Tuna and Cheddar Pie

Impossible Tuna and Cheddar Pie

2 c Onions; chopped
1/4 c Butter
2 can Tuna; 6/2 oz - drained
2 c Cheddar cheese; shredded
3 Eggs
1 1/4 c Milk
1 c Bisquick
1/4 ts Salt
1/8 ts Pepper
2 Tomatoes; thinly sliced

Preheat oven to 400F.

Grease pie plate 10 x 1 1/2 inch. Cook onions and butter in
10 inch skillet over low heat, stirring occasionally, until
onions are a light brown. Sprinkle tuna, 1 cup of cheese and
onions in plate. Beat eggs, milk, salt and pepper till smooth
15 seconds in blender on High or 1 minute with hand beater.

Pour into plate. Bake till knife inserted in centre comes out
clean, 25 to 30 minutes. Top with tomato slices and remaining
cheese. Bake for another 3 to 5 minutes untill cheese is melted.

Cool 5 minutes.