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Sausage with onion gravy with green peas on a plate.
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5 from 10 votes

Bangers and Mash (Sausage with Onion Gravy over Mashed Potatoes)

Quick and easy Irish sausage with onion gravy served over mashed potatoes. Pure comfort food for Saint Patrick's Day!
Prep Time5 mins
Cook Time15 mins
Total Time20 mins
Course: Dinner
Cuisine: Irish
Keyword: bangers and mash, sausage with onion gravy
Servings: 4 servings
Calories: 555kcal
Author: Anna


  • 1 lb russet or red potatoes
  • 1 tablespoon butter
  • 2 tablespoons sour cream
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 4 pork sausages I used Irish bangers
  • 1 tablespoon olive oil
  • 1 tablespoon butter
  • 1 medium yellow onion
  • 1 teaspoon minced garlic
  • 1.25 cups beef stock
  • 1 tablespoon cornstarch See note
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper


  • Start by making mashed potatoes. Use your preferred method. I use my Instant Pot Mashed Potatoes recipe. Add butter and sour cream and mash well. Season with salt and pepper.
  • Slice the onion. Measure out beef stock and whisk it with cornstarch.
  • In a skillet, heat up olive oil. Brown sausages on each side. Remove from pan.
  • Add butter to the same skillet. Add onion and garlic. Saute until fragrant and nicely brown. Add beef stock and cornstarch mixture. Simmer until thickened into a sauce. Season with salt and pepper. Add sausages back to the gravy and heat it all up together.
  • Serve sausages with gravy on a bed of mashed potatoes and a side of green peas.


Serving: 1sausage | Calories: 555kcal | Carbohydrates: 26g | Protein: 21g | Fat: 40g | Saturated Fat: 14g | Cholesterol: 99mg | Sodium: 1510mg | Potassium: 932mg | Fiber: 1g | Sugar: 2g | Vitamin A: 295IU | Vitamin C: 9.5mg | Calcium: 44mg | Iron: 2.5mg