Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper.

Pat the pickle slices very dry with paper towels. This step is key to keeping your sandwich crispy, not soggy.

On the parchment-lined baking sheet, sprinkle a thin layer of grated cheddar cheese into two rectangles. These will be the “bread” for your sandwich.

Arrange four pickle slices tightly together on top of each cheese rectangle.

Sprinkle another thin layer of cheese over the pickles.

Bake for 20 to 25 minutes or until the cheese is lightly golden and crispy. Watch closely, as oven times can vary.

Remove from the oven and let cool for 10 minutes. This helps the cheese firm up, making it easier to handle.

Spread mustard or spicy mayo on one side of each cheesy rectangle. Layer with microgreens or lettuce, turkey, tomato slices, and red onion if using.

Carefully fold or sandwich the two halves together.

Slice, serve, and enjoy every crunchy, cheesy bite!