Patty Melts with Secret Sauce

Ingredients

For the patty melts:

• 1 lb.Ground beef
• 6 Slices rye bread
• ½ tsp.Onion powder
• ½ tsp.Garlic powder
• Salt and pepper to taste
• 6 Slices cheddar cheese
• 6 Sliced provolone cheese
• 6 Tbsp.Butter softened and unsalted

For the secret sauce: