Sloppy Joe Casserole Recipe

1-1/2 pounds lean ground beef

1 large white onion, diced

1 large green bell pepper, diced

2 tablespoons brown sugar

1 tablespoon Worcestershire sauce

2 teaspoons dry mustard

1 teaspoon garlic salt

1 (15 ounce) can tomato sauce

¾ cup ketchup

2 cups Gold Medal® all-purpose flour

3 teaspoons baking powder

1 teaspoon salt

1-1/3 cup milk

6 tablespoons melted butter

2 large eggs

1-1/2 cups shredded cheddar cheese