# What You'll Need:
→ Caramelized Onions
01 - 1 large yellow onion, thinly sliced
02 - 1 tablespoon unsalted butter
03 - 1 teaspoon olive oil
04 - 1/2 teaspoon salt
05 - 1/2 teaspoon sugar (optional)
→ Sandwich
06 - 4 slices sourdough or country bread
07 - 2 tablespoons unsalted butter, softened
08 - 1 medium crisp apple (e.g. Granny Smith or Honeycrisp), thinly sliced
09 - 4 ounces sharp cheddar cheese, sliced or shredded
10 - Freshly ground black pepper, to taste
# Method:
01 - Melt butter with olive oil in a skillet over medium-low heat. Add sliced onion and salt; cook, stirring frequently, for 15 to 18 minutes until onions are deeply golden and tender. Optionally, stir in sugar halfway through cooking for additional sweetness.
02 - Arrange bread slices and spread softened butter on one side of each. On the unbuttered sides, layer half the cheddar cheese, caramelized onions, apple slices, a pinch of black pepper, then the remaining cheddar. Top with the second bread slice with buttered side facing outward.
03 - Heat a nonstick skillet or griddle over medium heat. Place sandwiches in skillet and cook 3 to 4 minutes per side, pressing gently, until bread is golden brown and cheese is melted. Reduce heat if bread browns too quickly.
04 - Remove sandwiches from heat and let rest for 1 to 2 minutes. Slice and serve warm.
