Prep Time 10 minutes mins
Cook Time 20 minutes mins
Resting Time 5 minutes mins
Total Time 35 minutes mins
For extra flavor, brown the sausage well to develop caramelized bits before adding the onions, and be sure to drain excess fat so the dip doesn’t become greasy; if you like a smoother, more “party-style” dip, you can transfer the cooked mixture to a baking dish, top with extra mozzarella, and bake at 375°F (190°C) for 10–15 minutes until bubbly and golden around the edges. You can also swap mild sausage for hot (or mix half and half) to control the heat level, and the dip can be made ahead, chilled, and gently reheated on the stove or in the oven with a splash of milk or cream to loosen if it thickens too much.