Best Frittata Affogato Recipe - How To Make Frittata Affogato

Ingredients

• 12 large eggs
• 1/4 c. chopped fresh basil leaves, plus more for serving
• 1/4 c. whole milk
• 1/2 tsp. kosher salt
• 1/4 tsp. freshly ground black pepper
• 2 tbsp. extra-virgin olive oil
• 1 medium red bell pepper, stemmed, seeded, and thinly sliced
• 1 small yellow onion, thinly sliced
• 1/2 lb. spicy or sweet Italian sausage, casings removed
• 2 c. store-bought or homemade marinara sauce
• 1 1/2 c. shredded mozzarella (about 6 oz.)