Garlic mussels with pasta and cherry tomatoes

Ingredients

• 1/2 pound fettuccine or spaghetti
• 2 pounds mussels
• 2 tablespoons butter
• 1 large onion, coarsely chopped
• 5 large garlic cloves, minced or crushed
• 2 cups whole cherry tomatoes or 1 pint grape tomatoes
• 1 cup dry white wine, preferably Chardonnay
• 1 teaspoon dried leaf tarragon
• 1/2 teaspoon hot red chili flakes
• 1/2 teaspoon salt
• 5 cups baby spinach leaves or 1/2 (10-oz) bag spinach
• recipeIngredient ends