Grilled Ham and Gouda Sandwich W/Caramelized Onions

Ingredients

• 1 tablespoon extra-virgin olive oil
• 1 large onion, thinly sliced
• unsalted butter, room temperature
• 4 slices country white bread or sourdough bread, 1/3-inch-thick
• 4 ounces thinly sliced smoked ham, divided
• 3 ounces gouda cheese, thinly sliced, divided
• 1 cup frisee, torn into bite-size pieces (about 2 large handfuls)

Directions

1. 1

   Heat oil in large nonstick skillet over medium heat. Add onion; sauté 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. 2

   Butter 2 bread slices. Place bread, buttered side down, on platter. Divide onion, ham, cheese, and frisée between bread slices. Top each with another bread slice; butter top slices.

3. 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.