Italian Sausage and Peppers Sandwich

Plump, perfectly cooked sausages with lightly sauced, charred and creamy peppers and onions all nestled into a sub roll.

By
Leah Colins
A studio portrait of editor Leah Colins.
Senior Culinary Editor

Leah is the Senior Culinary Editor at Serious Eats, and was previously a recipe developer and editor with America's Test Kitchen for almost 9 years. She has developed recipes for and edited over 20 cookbooks ranging in topic from bread baking to plant-based eating to outdoor grilling and so much more. While there, she also developed recipes and articles for Cooks Illustrated Magazine, Cooks Country Magazine, and ATK's digital platform.Before her life as a recipe developer, she cooked in 5-star and Michelin-starred fine dining establishments from coast to coast such as The Herbfarm and Aubergine Restaurant at L'Auberge Carmel; she also treasures her time flipping burgers on flattops in her teenage years, and baking and boxing cookies and pies at a wonderful family-owned German bakery in her early professional life.

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Updated July 19, 2024

Why It Works

  • Simmering the sausages in an intensely seasoned broth infuses them with extra flavor.
  • Simmering the sausages before searing also ensures they remain plump and tender, not dried out.

Hamburgers, hotdogs, pizza, and pie—all of these are foods that would easily make a top-ten list of classic culinary Americana. But we'd argue an Italian-American sausage and pepper sandwich is just as deserving of a spot. Whether you're wandering a street fair in a crowded city, grabbing a bite at a baseball stadium, or hitting the rickety rides at a traveling carnival, you're likely to spot a concession stand featuring a large griddle loaded with juicy Italian sausages and a tangled pile of tender peppers and onions. Stuffed into a sub roll and handed unceremoniously to you on a paper plate, it's a sandwich that's quietly familiar, rarely talked about, always present.

Overhead view of sausages and peppers

Serious Eats / Victor Protasio

It's an easy sandwich to make at home as well. A proper Italian sausage sandwich should have a nice snap when you bite into it. The fennel-scented sausage should remain juicy and bulging (but not bursting) in its taut casing, topped with wilted, charred, and lightly sauced bell peppers and onions, all nestled into a hearty sub roll. It’s relatively quick (under 45 minutes) to make and relies on a number of pantry-friendly seasonings you probably already have on hand. The key to this homemade version’s success is the cooking method.

Overhead view of spooning peppers onto sausages

Serious Eats / Victor Protasio

The best way to achieve perfectly cooked and “snappy” sausages that are plump, not wrinkled, is to first simmer them in a flavorful sauce until they register 145°F (62℃) before finishing them in a skillet for a properly browned exterior. Kenji uses a similar technique and rationale for grilled sausages, pointing out that if you cook a sausage directly over high heat, the casing and outer layers will quickly get very hot, causing them to contract while the raw meat in the center won't have contracted at all. The frequent and undesirable result is the casing bursting open, expelling all the sausage juices into the pan, never to be recovered. You’re left with a sausage with a leathery exterior and a dried out and possibly still raw center.

Gently simmering the sausages first ensures the outer casing and the interior meat cook through at the same rate. A moderate and consistent heat avoids any fast contracting of the casing which could cause it to tear or wrinkle later on. Better yet, simmering in an intensely seasoned broth with garlic, fennel, and dried Italian spices infuses the sausage with even more flavor during cooking.

While the sausages are simmering, the iconic duo of peppers and onions are wilted and browned in a skillet. I prefer to use a cast iron skillet for optimal browning, but a stainless steel or even a nonstick skillet would work fine— just omit the preheating of the empty skillet in step 3.

Overhead view of sausages browned in skillet

Serious Eats / Victor Protasio


The sausages are then quickly browned in the skillet before a portion of the concentrated tomato-based cooking broth is stirred into the pepper and onion mixture and cooked until the broth is reduced and the vegetables are well coated. Stuffed into a sub roll, it's time to take a bite. The only question is, which American scene does the flavor take you to?

This recipe was developed by Jasmine Smith; the headnote was written by Leah Colins.

Recipe Details

Italian Sausage With Peppers Sandwich Recipe

Prep 10 mins
Cook 30 mins
Total 40 mins
Serves 4
Cook Mode (Keep screen awake)

Ingredients

  • 1/4 cup (60ml) extra-virgin olive oil, divided

  • 6 garlic cloves, finely minced (1 ounce; 28g), divided 

  • 2 teaspoons dried Italian seasoning blend (see notes)

  • 1 teaspoon fennel seeds

  • 1/4 to 1 teaspoon crushed red pepper flakes (see notes)

  • 1 cup (237ml) dry white wine

  • 2 1/2 cups (591ml) homemade or store-bought low-sodium chicken stock

  • One 15-ounce (425g) can tomato sauce

  • 3 medium yellow, red, or green bell peppers (1 pound; 453g each), stemmed, seeded, and cut into 1/4-inch-wide strips (about 5 cups)

  • 2 medium sweet onions (6 ounces; 170g each), thinly sliced (about 3 cups)

  • 1 teaspoon kosher salt; for table salt use half as much by volume

  • 1/2 teaspoon ground black pepper

  • 4 sweet or hot Italian sausages (4 ounces; 113g each)

  • Four 8-inch Italian sub rolls, split lengthwise and lightly toasted

Directions

  1. In a large saucepan, heat 2 tablespoons oil over medium heat until shimmering. Add half of the garlic, Italian seasoning, fennel seeds, and crushed red pepper and cook, stirring constantly, until fragrant and garlic is lightly browned, about 1 minute. Pour in the wine and cook, stirring, for 1 minute. Stir in chicken stock and tomato sauce and bring to a simmer.

    Two image collage of toasting fennel seeds and stirring in tomato paste

    Serious Eats / Victor Protasio

  2. Add sausages to the tomato mixture. Return mixture to a gentle simmer over medium heat and cook, stirring occasionally and adjusting heat as needed to maintain gentle simmer, until sausages registers 145°F (62℃), 8 to 10 minutes; remove from heat.

    Overhead view of sausages added to tomato mixture

    Serious Eats / Victor Protasio

  3. Meanwhile, heat an empty large cast-iron skillet over medium-high heat for 3 minutes, then add remaining 2 tablespoons of oil and heat until shimmering. Add peppers, onions, salt and pepper and cook, stirring occasionally, until vegetables are softened and beginning to brown, 12 to 14 minutes. Add the remaining half of the garlic and cook, stirring occasionally, until fragrant, about 1 minute. 

    Two image collage of peppers cooking and adding garlic to softened peppers in pan

    Serious Eats / Victor Protasio

  4. Using tongs, push onion mixture to the edges of the skillet and place sausages into the clearing in the center of the skillet. Sear the sausages over medium-high heat, flipping sausages and stirring vegetables occasionally, until sausages are well browned in spots, about 4 minutes. Transfer sausages to a plate. 

    Two image collage of adding sausages and flipping them over in pan

    Serious Eats / Victor Protasio

  5. Stir 1 cup of the cooked tomato mixture into pepper and onion mixture in the skillet. Cook, stirring constantly, until thickened and vegetables are well coated, about 1 minute. Remove from heat. 

    Overhead view of adding liquid to pan

    Serious Eats / Victor Protasio

  6. Place 1 sausage in each bun. Divide pepper and onion mixture evenly among buns, spooning any remaining sauce from the skillet over top. Serve.

    Overhead view of spooning peppers onto sausages

    Serious Eats / Victor Protasio

Special Equipment

Large saucepan, large cast-iron skillet

Notes

Italian seasoning blend is usually made from a mixture of dried herbs including oregano, basil, thyme, rosemary, sage, and marjoram. Feel free to mix up your own version using whichever of those dried herbs you have on hand.

Red pepper flakes can vary significantly in their level of spiciness, as does an individual's tolerance for heat. Use more or less depending on the intensity of heat of your red chile flakes as well as your heat preference.

Nutrition Facts (per serving)
549Calories
25gFat
57gCarbs
16gProtein
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Nutrition Facts
Servings: 4
Amount per serving
Calories549
% Daily Value*
Total Fat 25g32%
Saturated Fat 6g28%
Cholesterol 16mg5%
Sodium 1763mg77%
Total Carbohydrate 57g21%
Dietary Fiber 6g22%
Total Sugars 12g
Protein 16g
Vitamin C 38mg189%
Calcium 160mg12%
Iron 5mg27%
Potassium 914mg19%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

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