Fresh Pea, Fava Bean & Pancetta Pasta

Ingredients

• 2 lbs. fava beans, in pods
• 1 lb. dried orecchiette
• 2 lbs. fresh peas, in pods
• 2 lbs. pancetta, chopped
• 2 yellow onions, thinly sliced
• ¼ cup butter (½ stick), divided
• 2 garlic cloves, chopped
• 1 Tablespoon sherry vinegar
• ½ teaspoon kosher salt
• ½ teaspoon ground pepper
• ¼ teaspoon red pepper flakes, optional
• ½ cup shredded Pecorino
• 2 Tablespoons chopped fresh basil
• 2 Tablespoons chopped fresh marjoram