Bangers and Mash with Onion Gravy and Peas

Why You’ll Love This Recipe

• Comforting and hearty: creamy mash, juicy sausages, and a glossy onion gravy.
• Weeknight-friendly timing with smart multitasking.
• Classic British flavors made approachable for home cooks.
• Flexible: swap in your favorite sausages or make it vegetarian.

Grocery List

• Produce: Yukon Gold potatoes, yellow onions, garlic, fresh thyme, chives, parsley, lemon, optional fresh mint
• Dairy: Unsalted butter, whole milk, heavy cream
• Pantry: British-style pork sausages, olive oil, all-purpose flour, low-sodium beef stock, Worcestershire sauce, Dijon mustard, bay leaf, kosher salt, black pepper

Full Ingredients

Sausages

• 8 British pork sausages (about 2 lb total)
• 1 tbsp olive oil

Caramelized Onion Gravy

• 2 tbsp unsalted butter, plus 1 tbsp cold butter to finish
• 2 large yellow onions (about 1 lb), thinly sliced pole-to-pole
• 2 garlic cloves, minced
• 2 tbsp all-purpose flour
• 2 cups low-sodium beef stock
• 2 tsp Worcestershire sauce
• 1 tsp Dijon mustard
• 4 sprigs fresh thyme (or 1/2 tsp dried)
• 1 bay leaf
• Kosher salt and freshly ground black pepper, to taste

Creamy Mashed Potatoes

• 2 lb Yukon Gold potatoes, peeled and cut into 1.5-inch chunks
• 4 tbsp unsalted butter
• 3/4 cup whole milk, warmed
• 1/4 cup heavy cream, warmed
• 1 tsp kosher salt (plus 1 tbsp for the boiling water)
• 1/4 tsp white or black pepper

Buttered Peas

• 2 cups frozen petite peas (10 oz)
• 1 tbsp unsalted butter
• 1/2 tsp lemon zest
• 1 tbsp chopped fresh mint (optional)
• Kosher salt and black pepper, to taste

For Serving

• 1 tbsp chopped fresh chives
• 1 tbsp chopped fresh parsley

Step-by-Step Instructions

Step 1: Start the potatoes

Place the potatoes in a large pot, cover with cold water by 1 inch, and add 1 tablespoon kosher salt. Bring to a boil over high heat, then reduce to a brisk simmer and cook until a fork slides in easily, 12–15 minutes. Drain well, return to the hot pot, and let steam off excess moisture while you continue cooking.

Step 2: Brown and cook the sausages

Heat a large skillet over medium-high. Add 1 tablespoon olive oil and the sausages. Sear until deeply browned on two sides, 3–4 minutes per side. Reduce heat to medium-low, cover, and cook until the centers reach 160°F, about 8–10 minutes. Transfer sausages to a warm plate and tent with foil.

Step 3: Caramelize the onions

In the same skillet (do not wipe it out), add 2 tablespoons butter and the sliced onions with a pinch of salt. Cook over medium-low, stirring every few minutes, until soft, jammy, and deep golden, 20–25 minutes. If the fond on the pan threatens to burn, splash in 1–2 tablespoons water and scrape up the browned bits. Stir in the minced garlic and cook 1 minute more.

Step 4: Build the onion gravy

Sprinkle the flour over the onions and stir for 1 minute to cook off the raw taste. Gradually whisk in the beef stock until smooth. Add Worcestershire, thyme, and bay leaf. Simmer gently, stirring, until glossy and thick enough to coat a spoon, 8–10 minutes. Remove thyme and bay; whisk in Dijon and 1 tablespoon cold butter. Season to taste with salt and pepper. Return sausages to the sauce to warm through for 2 minutes.

Step 5: Mash the potatoes

Warm the milk and cream together until steaming (stovetop or microwave). Add 4 tablespoons butter to the drained potatoes and mash until mostly smooth. Stream in the warm dairy, mashing until creamy and fluffy. Season with 1 teaspoon kosher salt and 1/4 teaspoon pepper (adjust to taste). Cover to keep warm.

Step 6: Butter the peas and serve

Bring a small pot of salted water to a boil. Add peas and cook until bright green and tender, 2–3 minutes. Drain and toss with 1 tablespoon butter, lemon zest, a pinch of salt and pepper, and optional chopped mint. To serve, spoon a generous bed of mash onto plates, top with sausages, and ladle over the caramelized onion gravy. Scatter with chives and parsley and serve peas on the side.

Pro Tips

• Do not prick the sausages—this keeps them juicy and prevents moisture loss.
• Keep onion heat moderate; slow caramelization develops sweetness without burning.
• Warm milk and cream make ultra-smooth mash and prevent a gummy texture.
• If gravy gets too thick, whisk in a splash of hot stock or water to loosen.
• For extra gloss, always finish the gravy by whisking in a small knob of cold butter off heat.

Variations

• Stout Onion Gravy: Replace 1 cup of stock with stout beer; simmer to reduce before finishing with Dijon and butter.
• Mustard Mash: Stir 1–2 teaspoons whole-grain mustard into the finished potatoes for a tangy kick.
• Vegetarian: Use plant-based sausages and swap beef stock for rich vegetable stock; add a splash of soy for depth.

Storage & Make-Ahead

Gravy and onions keep 4 days in the refrigerator or 3 months frozen; reheat gently, adding a splash of stock as needed. Mashed potatoes keep 2 days refrigerated; rewarm over low heat with a bit more warm milk. Cooked sausages keep 3 days refrigerated; reheat covered at 350°F for 10–12 minutes or in a skillet with a splash of water until 165°F. Peas are best fresh but reheat quickly in a covered pan with a teaspoon of water and a dab of butter.

Nutrition (per serving)

Approximate: 1,020 calories; 40 g protein; 78 g carbohydrates; 62 g fat; 2,200 mg sodium. Values will vary based on sausage brand and seasoning.