
Slow Cooker Mushroom Bourguignon over Mashed Potatoes
French · Medium · Prep 15min · Total 375min
DinnerSlow CookerComfortGluten-free
Ingredients
- 1 tbsp olive oil
- 1 medium yellow onion, diced
- 4 cloves garlic, minced
- 1½ lbs cremini (or mixed cremini + portobello) mushrooms, quartered
- 1 cup frozen pearl onions, thawed
- 2 medium carrots, sliced into ½-inch coins
- 2 tbsp tomato paste
- 1 tbsp all-purpose flour (or 1 tbsp cornstarch for GF)
- 1 cup dry red wine (like Pinot Noir or Merlot; sub extra broth + 1 tbsp red wine vinegar)
- 2 cups low-sodium vegetable broth
- 2 tbsp low-sodium soy sauce or tamari
- 1 tbsp tomato paste (additional for depth)
- 1 tsp dried thyme
- 1 bay leaf
- 1 tsp salt, plus more to taste
- ½ tsp black pepper
- Mashed potatoes, for serving:
- 1½ lbs russet potatoes (about 3 medium), peeled and cubed
- ¼ cup plain unsweetened plant milk
- 3 tbsp vegan butter
- ½ tsp salt
- Fresh parsley, chopped, for garnish
Instructions
- Optional but recommended: heat olive oil in a skillet over medium-high. Sear mushrooms (in batches, don't crowd) 4–5 minutes until they release liquid and turn golden. Transfer to the slow cooker.
- In the same skillet, soften the diced onion 3–4 minutes, add garlic and cook 30 seconds. Stir in tomato paste and flour; cook 1 minute. Pour in red wine to deglaze, scraping up any brown bits. Let simmer 2–3 minutes to reduce slightly.
- Add the onion-wine mixture to the slow cooker along with pearl onions, carrots, vegetable broth, soy sauce, thyme, bay leaf, salt, and pepper. Stir to combine.
- Cover and cook on LOW 6–7 hours (or HIGH 3–4 hours) until mushrooms are deeply tender and the sauce is thick and glossy.
- About 30 minutes before serving, make the mashed potatoes: boil cubed potatoes in salted water 15–18 minutes until fork-tender. Drain, return to the pot, and mash with plant milk, vegan butter, and salt until smooth and creamy. Cover to keep warm.
- Remove bay leaf from the bourguignon. Taste and adjust salt and pepper. If the sauce is thin, ladle 1 cup into a small pot and simmer 5 minutes to reduce, then stir back in.
- Spoon mashed potatoes onto plates or shallow bowls and ladle the mushroom bourguignon generously over the top. Garnish with fresh parsley and serve with crusty bread.