1 tablespoon extra virgin olive oil
1 onion, thinly sliced
4 slices sourdough
4 ounces smoked ham, thinly sliced
3 ounces gouda cheese, thinly sliced
1 cup frisee, torn
butter at room temperature
Method of Preparation:
1.Heat oil in large nonstick skillet over medium heat. Add onion; saut 5 minutes. Reduce heat to medium-low; cover and cook until onion is very tender and golden, stirring frequently, about 25 minutes longer. Season with salt and pepper. Cool slightly.
2.Butter 2 bread slices. Place bread, buttered side down, on platter. Divide onion, ham, cheese, and frise between bread slices. Top each with another bread slice; butter top slices.
3.Heat another large nonstick skillet over medium heat. Add sandwiches and cook until bread is golden brown and cheese melts, pressing occasionally with spatula, about 4 minutes per side. Cut sandwiches in half diagonally and serve immediately.