Loaded Italian Sausages

These were such a hit in our house—one of those dinners where everyone goes quiet because it’s that good. They brought us right back to our Chicago trip and those unforgettable Chicago Dogs… just with a cozy, at-home twist. Juicy sausages, caramelized peppers and onions, a little tang from balsamic, and that pop of giardiniera—every bite is layered, vibrant, and so satisfying. Plus, they’re packed with veggies, which always feels like a win.

Ingredients

5 sweet or spicy Italian sausages (I used sweet Italian chicken sausages)
1 tbsp extra-virgin olive oil
2 red or green bell peppers, finely diced
1 yellow onion, finely diced
Kosher salt
Freshly ground black pepper
1 tbsp balsamic vinegar
1 cup shredded mozzarella cheese
1/4 cup Chicago-style giardiniera

Directions

Remove the sausages from the fridge 30 minutes prior to cooking.
Preheat the oven to 375 degrees F. Line a sheet pan with parchment paper (or use a 9"x13" baking dish).
Using a sharp knife, butterfly the Italian sausages: Slice them lengthwise, but don't cut all the way through. Bend them open and use the back of the knife to help flatten them, creating a larger cooking surface.
Set a large skillet over medium-low heat and add the olive oil. Once the olive oil is hot, place the sausages cut-sides down in the skillet. Don't stir. Let them brown in the pan for 4 - 5 minutes, until a nice crust forms. Transfer the sausages to the prepared sheet pan or baking dish, cut-sides up. Set aside.
Add the bell peppers and onion to the same skillet and adjust the heat to medium-high. Saute until the vegetables are tender, 5 - 6 minutes. Season with salt and black pepper, then add the balsamic vinegar and continue to cook for 1 - 2 minutes, stirring often, until the balsamic coats the vegetables like a glaze.
Use tongs to distribute the sauteed bell peppers and onions evenly on top of the sausages. Spread the mozzarella and giardiniera over the vegetables.
Transfer the sheet pan or baking dish to the oven and roast until the cheese is melted and bubbling, 10 - 12 minutes. Let the sausages cool for a few minutes before serving.

Recipe Source: The Powered by Protein Cookbook, Jackie Hartlaub