Impossibly Easy Cheeseburger Pie

From the Bisquick box.

Prep: 10 minutes. / Cook: 25 minutes

Serves: 6

We recently tried this as a last-minute dinner when I didn't feel like eating (or making) any of the other options.  It's super easy.  I liked it--Matt said it's okay in a pinch.  With the addition of ketchup, mustard, and chopped dill pickles, I thought it tasted very similar to a cheeseburger.

1 lb. lean ground beef
1 cup chopped onion
1/2 tsp. salt
1 cup shredded cheddar cheese (4 oz)
1/2 cup Bisquick mix
1 cup milk
2 eggs

Topping suggestions: ketchup, mustard, pickles, lettuce, tomatoes

Cook beef and onion over medium-high heat, stirring frequently, until beef is thoroughly cooked; drain.  Stir in salt.  Spread in 9" pie plate sprayed with cooking spray; sprinkle with cheese.

Whisk Bisquick, milk, and eggs in medium bowl until blended.  Pour into pie plate.

Bake 25 minutes at 400 F or until a knife inserted in center comes out clean.

Notes:
- I used 80/20 ground beef and half a large onion, which was a cup (I don't know what their idea of large is, but it must not be very big.)
- I think it could use more cheese.
- Without any toppings, a serving ends up being about 315 calories (not subtracting the fat that was drained off).