Ingredients
6 tablespoons butter, softened, divided 8 slices sourdough bread1/2 cup shredded sharp white cheddar cheese 1/2 cup shredded Monterey Jack cheese1/2 cup shredded Gruyere cheese 3 tablespoons mayonnaise 3 tablespoons finely shredded Manchego or Parmesan cheese1/8 teaspoon onion powder4 ounces Brie cheese, rind removed, sliced2 medium ripe avocado, peeled and sliced
Preparation
Spread 3 tablespoons butter on 1 side of bread slices. Place bread, butter side down, in a large cast-iron skillet or on an electric griddle over medium-low heat until golden brown, 2-3 minutes; remove. In a small bowl, combine cheddar, Monterey Jack and Gruyere. In another bowl, mix together remaining 3 tablespoons butter, mayonnaise, Manchego cheese and onion powder.
To assemble sandwiches, top toasted side of 4 bread slices with sliced Brie; add avocado slices. Sprinkle cheddar cheese mixture evenly over avocado slices. Top with remaining bread slices, toasted side facing inward. Spread the butter-mayonnaise mixture on the outsides of each sandwich. Place in same skillet and cook until golden brown and cheese is melted, 5-6 minutes on each side. Serve immediately.
