Ingredients:
- 1 bunch scallions, ends trimmed
- 1 tsp. olive oil
- 1 tsp. plus a pinch kosher salt, divided
- 1 tsp. plus a pinch of black pepper, divided
- 1/2 cup mayonnaise, divided
- 2-3 canned chipotle chiles, minced, plus 3 teaspoons adobo sauce from can
- 2 Tbsp. butter
- 4 ground beef burgers
- 8 thick slices white sandwich bread
- 8 slices Gouda cheese
Directions:
- Cut scallions in half lengthwise and toss together in a bowl with oil, a pinch of salt and a pinch of black pepper.
- Heat a large skillet over medium-high. Add scallions and cook, turning occasionally, until charred in spots and tender, about 4 minutes. Transfer scallions to a cutting board and coarsely chop.
- In small bowl, stir together chopped scallions, 1/4 cup mayonnaise, chipotle chiles and adobo sauce; set aside.
- Wipe skillet clean. Add butter to skillet and melt over medium-high heat. Add patties and sprinkle with salt and pepper. Cook patties, pressing tops occasionally using a spatula to keep them thin and flat, until bottoms are well-browned. Transfer patties to a plate lined with paper towels.
- Wipe skillet clean. Spread about 1 tablespoon scallion-chipotle mayonnaise on four bread slices. Top each with one cheese slice, one patty and one more cheese slice. Cover with remaining bread slices.
- Return skillet to heat over medium. Spread one outer side of each sandwich with 1/2 tablespoon mayonnaise. Place sandwiches, mayonnaise side down, in skillet. Cook, pressing tops with a spatula, until bottoms are golden, 2 to 3 minutes.
- Spread other side of each sandwich with 1/2 tablespoon mayonnaise and flip. Cook sandwiches, pressing tops occasionally with spatula, until bottoms are toasty and cheese is melted, 2 to 3 minutes.
- Cut sandwiches in half and serve.
