Description

This Caramelized Onion, Apple, and Cheddar Grilled Sandwich is a real treat—a restaurant-worthy bite you’d expect to see on the blackboard at your favorite lunch spot. With layers of golden caramelized onions, crisp apple slices, and melted cheddar on crusty sourdough, it’s an irresistible combination of savory and sweet. This sandwich is equally delicious as a vegetarian option, but feel free to add prosciutto or bacon for a bit of smoky richness. Perfect for a special lunch or cozy dinner!

Ingredients

3 tablespoons salted butter, divided
2 yellow onions, thinly sliced
Salt and black pepper, to taste
3/4 cup water
1 tablespoon fresh thyme leaves (or 1/2 teaspoon dried thyme)
1 tablespoon fresh sage, chopped (or 1/2 teaspoon dried sage)
1 pinch crushed red pepper flakes (optional)
8 slices sourdough bread (or any sturdy bread)
2 tablespoons softened butter
3 cups shredded cheddar cheese
1 honeycrisp apple, thinly sliced (or any firm, tart apple)
Optional (non vegetarian): 4 slices of prosciutto or bacon

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Instructions

Melt 2 tablespoons butter in a large skillet over medium-high heat. Add the onions and cook for about 3 minutes until softened.
Add half of the water, season with salt and pepper, and continue cooking for 5 minutes until most of the water has evaporated.
Add the remaining water and cook another 5 minutes, or until the onions are golden and caramelized. Stir in the thyme, sage, and red pepper flakes (if using). Remove from heat.
In a separate skillet over medium heat, cook the prosciutto until crisp (optional), about 2 minutes per side. Remove from skillet and set aside.
Brush the outside of each bread slice with softened butter. On the inside of 4 slices, layer with shredded cheddar cheese, caramelized onions, thin apple slices, and prosciutto (if using). Top with remaining bread slices, buttered side facing out.
Place the sandwiches in a skillet over medium heat, cooking 1-2 at a time, until golden on each side, about 3-5 minutes per side.
Slice in half and serve immediately. Enjoy the melty, caramelized goodness!

Cook Time: 30 minutes