Slow Cooker Belgian Beef | Command Cooking

Ingredients

• 1 tablespoon canola or olive oil
• 3 pounds chuck roast
• salt, to taste
• black pepper, to taste
• 2 tablespoons red wine vinegar
• 5 yellow onions, sliced
• 1 can dark beer, plus more as needed
• 2 cups low-sodium beef stock
• 1 tablespoon Worcestershire sauce
• 4 bay leaves
• 8 ounces button mushrooms, optional, halved