Melt butter in heavy large pot over medium-high heat. Add garlic; sauté until fragrant, about 1 minute. Mix in tomatoes, then next 5 ingredients. Add mussels. Cover and steam until mussels open, about 7 minutes (discard any mussels that do not open). Using slotted spoon, transfer mussels to large bowl. Simmer sauce uncovered until slightly reduced, about 3 minutes. Season with salt and pepper. Pour sauce over mussels and serve.
Note: I put my veggies in the food processor and chop them up to make quick work of this one!