Gruyère, Arugula, and Prosciutto-Stuffed Chicken Breasts

Gruyère, Arugula, and Prosciutto-Stuffed Chicken Breasts (Adapted from CL)

6 (4-ounce) skinless, boneless chicken breast halves
6 (1/2-ounce) slices prosciutto
6 (1/2-ounce) slices Gruyère cheese
1 1/2 cups trimmed arugula
1/2 teaspoon salt
1/2 teaspoon black pepper
3 tablespoons all-purpose flour
1 tablespoon olive oil

Preheat oven to 350°.

To prepare the chicken, place each chicken breast half between 2 sheets of heavy-duty plastic wrap; pound to 1/4-inch thickness using a meat mallet or rolling pin. Discard plastic wrap. Top each chicken breast half with 1 slice prosciutto, 1 slice cheese, and 1/4 cup arugula, leaving a 1/4-inch border around edges. Fold in half, pinching edges together to seal; sprinkle with salt and pepper. (The chicken can be prepared up to a day ahead and refrigerated at this point.)

Dredge chicken in flour, shaking off excess. Heat oil in a large nonstick skillet over medium-high heat. Add chicken; cook 5 minutes on each side. Place chicken in a shallow baking pan; bake at 350° for 5 minutes or until done.