Sloppy Joe Casserole

Ingredients

• 1 lb ground beef (lean)
• ½ diced yellow onion
• ½ diced green bell pepper
• 2 minced garlic cloves
• 8 oz tomato sauce
• ½ cup ketchup
• 2 Tablespoons brown sugar
• 1 Tablespoon yellow mustard
• ¼ teaspoon optional pepper
• ½ teaspoon optional salt
• 1 cup cornmeal
• ½ cup all-purpose flour (gluten-free flour mix can be used)
• 1 Tablespoon granulated sugar
• ½ teaspoon baking soda
• ½ teaspoon salt
• 1 egg
• 2 Tablespoons oil
• ¾ cup milk