Step 1

Preheat oven to 400 degrees F. Coat a (9-inch) glass pie plate with cooking spray.

Step 2

In a large skillet, cook beef and onion over medium heat 8 to 10 minutes, stirring occasionally, until beef is brown; drain. Stir in ketchup, relish, and salt. Spread evenly into prepared pie plate, then sprinkle with cheese.

Step 3

In a small bowl, stir remaining ingredients with wire whisk until blended. Pour over top.

Step 4

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