
Sheet pan dinners are the weeknight hero you never want to give up, and this one delivers smoky, caramelized sausage alongside tender bell peppers, zucchini, and red onion all on a single pan. The key to making this work without gluten is starting with a certified gluten free smoked sausage — kielbasa or andouille both shine here — since conventional sausages can sneak in fillers or flavorings that aren't safe. Everything else on the ingredient list is naturally free of gluten, so there's no complicated swapping or specialty shopping involved. A bold mix of garlic, smoked paprika, and Italian seasoning ties it all together, and roasting at 425°F gives you those gorgeous caramelized edges that make the whole dish taste like it took way more effort than it did. You toss the pan halfway through to make sure everything browns evenly, and the result is deeply savory with just the right amount of char. Finish with a scatter of fresh parsley and serve straight from the pan — cleanup is practically an afterthought. This recipe makes four generous servings, so it's just as practical for a family dinner as it is for meal prepping lunches through the week.
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Preheat the oven to 425°F (220°C). Line an 18x13-inch rimmed sheet pan with foil or parchment and set aside.
In a large mixing bowl, combine the sausage rounds, bell peppers, zucchini, and red onion. Drizzle with the olive oil, then add the garlic, Italian seasoning, smoked paprika, salt, black pepper, and red pepper flakes, if using. Toss until everything is evenly coated.
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