25-Minute Sheet Pan Sausage & Butternut Squash

Fall weeknights call for dinners that taste like the season without chaining you to the stove. This sheet pan sausage and butternut squash is exactly that: smoky chicken sausage, sweet caramelized squash cubes, crispy-edged Brussels sprouts, and jammy red onion wedges, all roasted together on a single pan. The oven does the work — you toss everything once, flip once, and 25 minutes later dinner is done.

Why you’ll love it

• One pan, no babysitting. Everything roasts at the same temperature on the same pan — no staggered timing, no extra dishes.
• Fall produce at its best. Butternut squash caramelizes, Brussels sprouts crisp at the edges, red onion turns sweet and jammy.
• ~28g protein per serving (estimated), from hearty chicken sausage — a genuinely filling weeknight dinner.
• Minimal cleanup. Line the pan with parchment and you’re basically done.

Ingredients

• 1 1/4 lb chicken Italian sausage, about 5 links, cut into 1-inch chunks
• 1 small butternut squash, about 2 lb; peeled, seeded, and cut into 3/4-inch cubes (about 4 cups)
• 1 lb Brussels sprouts, trimmed and halved
• 1 medium red onion, cut into 1/2-inch wedges
• 3 tbsp olive oil
• 1 tbsp pure maple syrup
• 2 tsp smoked paprika
• 1 tsp garlic powder
• 1 tsp kosher salt
• 1/2 tsp freshly ground black pepper
• 2 tbsp chopped fresh parsley, for serving, optional
• Dijon mustard, for serving, optional

Equipment

A large rimmed sheet pan (18×13-inch half sheet), parchment paper, a large mixing bowl, and an instant-read thermometer.

Instructions

1. Heat the oven. Position a rack in the center of the oven and heat to 425°F. Line a large rimmed sheet pan with parchment paper.
2. Season the vegetables. In a large bowl, toss the butternut squash cubes, Brussels sprouts, and red onion wedges with the olive oil, maple syrup, smoked paprika, garlic powder, salt, and pepper until evenly coated.
3. Load the pan. Spread the vegetables in a single layer on the prepared pan — give them room; crowding steams instead of roasts. Nestle the sausage chunks in among the vegetables.
4. Roast. Roast for 10 minutes, until the vegetables are starting to soften and brown at the edges.
5. Flip and finish. Flip the sausage chunks and stir the vegetables, then roast 7–10 minutes more, until the sausage reads 165°F on an instant-read thermometer and the vegetables are tender with caramelized edges.
6. Serve. Shower with parsley if using, and serve straight from the pan with Dijon mustard on the side.

Doneness cues: Chicken sausage must reach 165°F internally — check the largest chunk. The squash is done when a cube mashes easily against the pan; the sprouts should have deeply browned, crispy outer leaves. If the vegetables need more color, give them 2–3 extra minutes; the sausage will be fine.

Nutrition note

Protein is estimated at about 28g per serving, calculated from USDA FoodData Central values for the listed ingredients — this is an estimate, not a lab analysis. Actual values vary by brand and preparation.

Substitutions and tips

• Turkey sausage or kielbasa swap in 1:1. Pre-cooked smoked sausage works too — add it for just the last 10 minutes so it heats through without drying out.
• No butternut? Sweet potato cut into 3/4-inch cubes roasts in the same time.
• Don’t crowd the pan. A single layer with breathing room is the whole secret to caramelization. If your pan is small, split across two pans.
• Cut the squash small. 3/4-inch cubes are the sweet spot — big chunks won’t cook through in 25 minutes.
• Line the pan. Maple syrup plus high heat equals sticky caramelized bits; parchment makes cleanup trivial.

Storage and reheating

Refrigerate leftovers within 2 hours in an airtight container for up to 4 days. Reheat on a sheet pan at 400°F for 8–10 minutes to re-crisp, or microwave in 60-second bursts until steaming (165°F). Freezes well for up to 3 months — thaw overnight in the fridge. The sprouts lose some crispness after freezing but the flavor holds.

Frequently asked questions

Can I use pre-cooked smoked sausage instead of raw? Yes — slice it into 1/2-inch rounds and add it to the pan for the last 10 minutes of roasting, just long enough to heat through and pick up color.

How do I get the vegetables caramelized instead of soggy? Three things: a fully preheated 425°F oven, a single uncrowded layer, and dry vegetables — pat the sprouts dry after trimming if they’re damp.

Can I prep this ahead? Cube the squash and halve the sprouts up to 2 days ahead; refrigerate in separate airtight containers. Cut the sausage the morning you cook and keep it refrigerated.

Is this good for meal prep? Very — portion into containers (serve the Dijon on the side). It reheats well for lunches all week.

What if my squash cubes are bigger than 3/4 inch? Give them a 5-minute head start: roast the squash alone first, then add everything else and continue as written. Total time stretches to about 30 minutes.

Can I make it spicier? Use hot Italian chicken sausage and add 1/2 teaspoon red pepper flakes with the other seasonings.

More quick high-protein dinners

For another hands-off dinner, try our 25-Minute Honey Garlic Chicken & Green Beans. Craving a skillet instead? Our 30-Minute Turkey Taco Skillet is all one pan. Soup season? 30-Minute White Bean Turkey Chili is a one-pot favorite.