mushroom bourguignon

INGREDIENTS

• 2 tablespoons olive oil
• 2 tablespoons butter, softened
• 2 pounds portobello mushrooms, in 1/4-inch slices (save the stems for another use) (you can use cremini instead, as well)
• 1/2 carrot, finely diced
• 1 small yellow onion, finely diced
• 2 cloves garlic, minced
• 1 cup full-bodied red wine
• 2 cups beef or vegetable broth (beef broth is traditional but vegetable to make it vegetarian; it works with either)
• 2 tablespoons tomato paste
• 1 teaspoon fresh thyme leaves (1/2 teaspoon dried)
• 1 1/2 tablespoons all-purpose flour
• 1 cup pearl onions, peeled (thawed if frozen)
• Egg noodles, for serving
• Sour cream and chopped chives or parsley, for garnish (optional)