Best Melty Patty Sandwich

Ingredients

• 6 slices of Provolone cheese
• 6 slices of cheddar cheese
• 6 slices of rye bread
• 6 tablespoons of softened butter
• 1 pound of ground beef
• 1/4 teaspoon of onion powder
• 1/2 teaspoon of sea salt
• 3/4 teaspoon of black pepper
• 1 teaspoon of sweet relish
• 1 teaspoon of sugar
• 2 tablespoons of ketchup
• 3 tablespoons of mayo
• 1 tablespoon of bacon bits