# What You Need:
→ Bread
01 - 4 slices sourdough or artisan bread
→ Cheese
02 - 4.2 oz Gruyère cheese, grated or thinly sliced
→ Spreads & Oils
03 - 2 tablespoons unsalted butter, softened
04 - 1 to 2 teaspoons truffle oil, white or black
→ Seasoning
05 - Freshly ground black pepper to taste
06 - Pinch of sea salt, optional
# Step-by-Step:
01 - Lay out bread slices and spread a thin layer of softened butter on one side of each slice.
02 - Flip bread over and drizzle truffle oil on the unbuttered side of two slices. Distribute grated Gruyère evenly over the oil-drizzled bread, then season lightly with black pepper and salt if desired.
03 - Top each cheese-covered bread slice with remaining bread slices, keeping the buttered side facing outward.
04 - Heat a non-stick skillet or grill pan over medium-low heat for even cooking.
05 - Place assembled sandwiches in the heated pan and cook for 3 to 4 minutes per side, pressing gently, until bread is golden brown and crisp with melted cheese inside. Lower heat if bread browns too quickly before cheese melts.
06 - Remove sandwiches from pan and let rest 1 minute. Slice diagonally and serve immediately.