Ingredient:

• 1 package (16 ounces) penne pasta
• 3 large heirloom tomatoes (about 2 pounds), seeded and chopped
• 3/4 pound fresh mozzarella cheese, cut into 1/2-inch pieces
• 1/2 cup loosely packed basil leaves, chopped
• 1/3 cup olive oil
• 1/4 cup lemon juice
• 1 shallot, finely chopped
• 1 garlic clove, minced
• 1 teaspoon sugar
• 3/4 teaspoon salt
• 1/2 teaspoon grated lemon zest
• 1/4 teaspoon pepper