Ingredients

extra-virgin olive oil

2 boneless skinless chicken breasts

kosher salt

Freshly ground black pepper

1 c. barbecue sauce

1 medium red onion, sliced in to thick rounds

8 sourdough slices (or preferred bread)

1 c. shredded gouda

Preparation

Step 1Heat grill pan over medium-high heat. Brush with olive oil.Step 2Season chicken on both sides with salt and pepper. Place on pan and grill until cooked through, about 4 to 5 minutes per side. During the last minute of cooking, brush chicken breasts with barbecue sauce. Remove chicken and let rest, 5 minutes. Slice crosswise.Step 3Rub olive oil on onions and season with salt and pepper. Grease the pan a bit more with olive oil. Add onions and cook until softened, 2 to 3 minutes per side, brushing the onions with the sauce during the last minute of cooking. Turn off the heat and carefully wipe pan to remove any blackened bits.Step 4Assemble the sandwiches. Lightly brush outside of bread with olive oil. Add chicken to one slice. Top with more sauce, then add the onions, cheese and another slice of bread. Repeat process to make 3 more sandwiches.Step 5Reheat grill pan. Add sandwiches to hot pan and place a heavy skillet ( such as cast iron) on top of the sandwiches to press down. Cook until cheese is melted.