Weeknight Mushroom Stroganoff

Ingredients (11)

• 1 pound cremini mushrooms, sliced
• 3 tablespoons butter
• 1 small onion, sliced thin
• 1 cup grape tomatoes, chopped
• 2 cloves garlic, minced
• 1 teaspoon fresh rosemary, minced
• 1 cup vegetable stock
• 2/3 cup sour cream
• 1 tablespoon mustard
• 12 oz. egg noodles
• Salt and pepper