Ingredients:

  • 12 slices Thick-cut Sourdough or Hearty White Bread (approx. 0.6-inch thick)
  • 6 oz Sharp Cheddar, freshly grated
  • 6 oz Gruyère or Monterey Jack, freshly grated
  • 4 tbsp Unsalted Butter, softened
  • 2 tbsp High-quality Mayonnaise
  • 1 pinch Garlic Powder

Instructions:

  1. Preheat your oven to 175°C (350°F). Place an empty large rimmed baking sheet inside the oven while it heats to ensure a thermal shock sear.
  2. In a small bowl, mix the softened butter, mayonnaise, and a pinch of garlic powder until smooth.
  3. Spread a generous layer of the butter-mayo mixture on one side of each bread slice.
  4. Flip half of the bread slices over and pile the grated Cheddar and Gruyère mixture high on the non-buttered side. Top with the remaining bread slices, buttered side facing out.
  5. Carefully remove the preheated tray from the oven. Arrange sandwiches on the tray, ensuring at least two inches of space between each for airflow.
  6. Bake for 6 minutes. Use a thin metal spatula to flip the sandwiches once the bottom is golden and sizzling.
  7. Bake for an additional 5-6 minutes until the cheese is molten and the edges are crisp. Serve immediately.