In this one-pot riff on ragu, quick-cooking sausage forms the base, supplemented by fennel, garlic, tomato paste and an optional umami-boosting bouillon cube.

These Italian meatball subs are packed with juicy homemade meatballs, rich marinara sauce, and gooey mozzarella, all inside crispy, toasted hoagie rolls. Ready in about an hour, they’re perfect for ...