Italian Sausage and Pepper Burgers

INGREDIENTS:
1 tablespoon olive oil
1 onion, thinly sliced
1 red bell pepper, thinly sliced
1 garlic clove, minced
1 tablespoon tomato paste
1/2 pound hot Italian sausage (if links, remove casings)
1/2 pound sweet Italian Sausage (if links, remove casings)
4 slices provolone cheese
4 ciabatta rolls, lightly toasted
1/4 cup pesto

METHOD:
Heat olive oil in a large skillet over medium heat. Add onions, peppers, and garlic. Sauté until onions are translucent and peppers are tender, about 8 to 10 minutes. Stir in tomato paste and cook an additional minute. Remove from heat.

Preheat grill to medium high. Combine both sausages in a bowl. Form into four patties. Grill about four to five minutes per side, until cooked through. Top burgers with peppers and a slice of cheese, close grill until cheese melts. Spread rolls with pesto and top with burger.