Quick Recipe Version (TL;DR)
Quick Ingredients
- 12 oz (340 g) fully cooked Italian sausage links, sliced into 1/4-inch rounds
- 1 medium bell pepper (about 6 oz / 170 g), thinly sliced
- 1/2 medium yellow onion (about 4 oz / 115 g), thinly sliced
- 1 1/2 cups (360 ml) marinara sauce
- 1 tbsp (15 ml) olive oil
- 1/2 tsp Italian seasoning
- 1/4 tsp garlic powder
- 1/8 tsp crushed red pepper flakes (optional)
- 1/2 tsp kosher salt, plus more to taste
- 1/4 tsp black pepper
- 1 cup (4 oz / 113 g) shredded mozzarella, divided
- 2 tbsp grated Parmesan (optional)
- 2 tbsp chopped fresh basil or parsley (optional)
- For serving (choose one): 18 oz (510 g) prepared microwave polenta (tube), sliced; or 6 oz (170 g) microwaveable pasta
Do This
- 1. Slice sausage, pepper, and onion.
- 2. In a microwave-safe bowl, toss sausage + veggies with olive oil, seasonings, salt, and pepper.
- 3. Microwave covered (vented) 3 minutes; stir.
- 4. Add marinara; microwave 3–4 minutes until bubbling hot (165°F / 74°C); stir.
- 5. Top with mozzarella; microwave 45–75 seconds until melted.
- 6. Warm polenta slices or microwave pasta per package directions.
- 7. Bowl it up: base of polenta/pasta, then sausage-pepper marinara, Parmesan and herbs if you like.
Why You’ll Love This Recipe
- Big Italian-American comfort food vibes with microwave-friendly speed.
- Uses fully cooked sausage, jarred marinara, and simple veggies for minimal prep.
- Melty mozzarella on top makes it feel like a baked pasta dinner without the oven.
- Flexible base: serve over microwave polenta for cozy texture or pasta for classic familiarity.
Grocery List
- Produce: 1 bell pepper, 1 yellow onion, fresh basil or parsley (optional)
- Dairy: shredded mozzarella, grated Parmesan (optional)
- Meat: fully cooked Italian sausage links (sweet or hot)
- Pantry: marinara sauce, olive oil, Italian seasoning, garlic powder, crushed red pepper flakes (optional), kosher salt, black pepper
- Optional base: prepared microwave polenta (tube) or microwaveable pasta
Full Ingredients
Sausage & Peppers Marinara
- 12 oz (340 g) fully cooked Italian sausage links, sliced into 1/4-inch rounds
- 1 medium bell pepper (about 6 oz / 170 g), thinly sliced (red, yellow, or orange for sweetness)
- 1/2 medium yellow onion (about 4 oz / 115 g), thinly sliced
- 1 tbsp (15 ml) olive oil
- 1 1/2 cups (360 ml) marinara sauce
- 1/2 tsp Italian seasoning
- 1/4 tsp garlic powder
- 1/8 tsp crushed red pepper flakes (optional)
- 1/2 tsp kosher salt, plus more to taste
- 1/4 tsp freshly ground black pepper
Cheesy Topping
- 1 cup (4 oz / 113 g) shredded mozzarella, divided
- 2 tbsp grated Parmesan (optional)
- 2 tbsp chopped fresh basil or parsley (optional)
For Serving (Choose One Base)
- Microwave polenta: 18 oz (510 g) prepared polenta (tube), sliced into 1/2-inch rounds or half-moons
- Or microwaveable pasta: 6 oz (170 g) microwaveable pasta (plain or lightly seasoned), prepared per package directions

Step-by-Step Instructions
Step 1: Prep the sausage and vegetables
Slice 12 oz fully cooked Italian sausage into 1/4-inch rounds. Thinly slice 1 medium bell pepper and 1/2 yellow onion. Keeping the slices fairly thin helps them soften quickly in the microwave and gives you that classic sausage-and-peppers texture.
Step 2: Season in a microwave-safe bowl
In a large microwave-safe bowl (at least 2 to 3 quarts for less splatter), add the sliced sausage, pepper, and onion. Drizzle with 1 tbsp olive oil. Sprinkle in 1/2 tsp Italian seasoning, 1/4 tsp garlic powder, 1/2 tsp kosher salt, 1/4 tsp black pepper, and 1/8 tsp crushed red pepper flakes (if using). Toss well so everything is lightly coated.
Step 3: Microwave to soften the peppers and onions
Cover the bowl with a microwave-safe lid or plate (leave it slightly vented so steam can escape). Microwave on HIGH for 3 minutes. Carefully remove (hot steam!), stir, then microwave for another 1 to 2 minutes, or until the peppers and onions are softened but not mushy.
Microwave timing note: Times assume a 1000–1200W microwave. If yours is lower wattage, add 30–60 seconds; if higher, start checking early.
Step 4: Add marinara and heat until bubbling
Pour in 1 1/2 cups marinara sauce and stir. Re-cover (vented) and microwave on HIGH for 3 to 4 minutes, stirring once halfway through, until the sauce is bubbling at the edges and the mixture reaches 165°F / 74°C in the center (especially important because you’re reheating meat).
Taste and adjust salt if needed. Marinara brands vary widely in salt and sweetness.
Step 5: Melt the mozzarella on top
Sprinkle 3/4 cup (about 3 oz / 85 g) shredded mozzarella evenly over the hot sausage-and-pepper mixture. Microwave on HIGH for 45 to 75 seconds, just until the cheese is melted and stretchy. Let it stand for 1 minute so the heat evens out and the sauce thickens slightly.
Step 6: Warm your base (polenta or pasta)
If using prepared polenta: Arrange polenta slices on a microwave-safe plate in a single layer. Cover with a damp paper towel and microwave on HIGH for 60 to 90 seconds, until hot. (If you prefer, you can microwave 30 seconds more for extra-soft polenta.)
If using microwaveable pasta: Prepare according to package directions. Aim for the pasta to be fully hot (steaming) so it doesn’t cool the sauce.
Step 7: Assemble bowls and finish
Divide the warm polenta or pasta between two bowls. Spoon the sausage-and-peppers marinara over the top, making sure each bowl gets plenty of sauce and veggies. Finish with the remaining 1/4 cup mozzarella, plus 2 tbsp Parmesan and fresh basil or parsley if you like. Serve immediately while the cheese is melty.
Pro Tips
- Use a big bowl: Marinara can bubble up quickly in the microwave; extra headspace helps prevent messy overflow.
- Vent the cover: A slightly vented lid/plate traps steam for tender peppers while avoiding pressure buildup.
- Want more “browned” flavor? If you have 5 extra minutes and a skillet, quickly sear the sliced sausage in a dry pan first, then proceed with the microwave sauce step.
- Control the heat: Choose hot Italian sausage or add red pepper flakes for spice; keep it mild with sweet sausage and no flakes.
- Check temperature: Heat the sausage mixture to 165°F / 74°C for best food safety and the tastiest, properly hot sauce.
Variations
- Cheesy baked-style finish (microwave “broil”): After melting the mozzarella, add 2 tbsp Parmesan and microwave in 15-second bursts until the top is extra bubbly.
- Veggie boost: Add 1 cup (30 g) baby spinach after the marinara heats; stir and microwave 30 seconds more until wilted.
- Low-carb bowl: Serve over microwaved zucchini noodles or cauliflower rice; reduce marinara to 1 1/4 cups if you like it less saucy.
Storage & Make-Ahead
Cool leftovers promptly, then store the sausage-and-peppers marinara in an airtight container in the refrigerator for up to 4 days. Reheat in the microwave on HIGH in 60-second bursts, stirring between, until it reaches 165°F / 74°C. Store polenta or pasta separately when possible for best texture. For make-ahead, slice the peppers/onion and sausage up to 24 hours in advance and keep refrigerated; then the bowl comes together even faster.
Nutrition (per serving)
Approximate, will vary by brand and base. Per serving (with polenta): ~720 calories, 35 g protein, 68 g carbs, 34 g fat, 6 g fiber, ~1450 mg sodium.
