Butter - 4 tbsp. Bread slices - 8 Avocado - 1, mashed with Garlic, Red Pepper flakes, Salt and Pepper Cheese slice - 4 Mayonnaise - 1/4 cup Butter Spread Butter on one side of each Bread slice. Place 4 Bread slices, buttered sides down, on a piece of parchment paper, and top evenly with the Avocado mixture followed by a Cheese slice. Top each slice with remaining Bread slices, buttered sides up. Heat cast-iron skillet over medium heat. Working in batches, cook sandwiches unti
