Step 1

Heat the oven to 350 degrees F.

Step 2

Spray a 9-inch pie plate with cooking spray.

Step 3

In a large skillet, cook the ground beef and onion until the beef is browned and the onion is translucent. If necessary, drain the excess grease from the skillet.

Step 4

Spread the beef mixture in the bottom of the pie plate. Sprinkle the beef and onions with the cheese.

Step 5

In a large bowl, combine the rest of the ingredients. Pour the mixture evenly over the beef.

Step 6

Bake for 25 to 30 minutes until the top is golden brown or until a toothpick inserted in the center comes out clean.