Graduated Grilled Cheese – Lodge Cast Iron

Ingredients

• 4 slices sourdough bread
• 1 medium yellow onion, sliced
• ½ cup button mushroom, sliced
• ¼ teaspoon garlic powder
• ¼ teaspoon black pepper
• ¼ teaspoon onion powder
• ¼ teaspoon dried basil
• Dash of cayenne pepper
• 2 slices swiss cheese
• 2 slices sharp cheddar cheese
• 4 slices tomato, thinly sliced
• 2 tablespoons unsalted butter, softened