Crab Dip with Garlic Saltines and Roasted Cherry Tomatoes

Name: Crab Dip with Garlic Saltines and Roasted Cherry Tomatoes
Ingredients: 1 cup cream cheese; 1/2 cup mayonnaise; 1 tablespoon Dijon mustard; 1/2 tablespoon lemon juice; About 1 tablespoon extra-virgin olive oil, optional; Kosher salt and freshly ground black pepper; 2 tablespoons chopped chives; 1 1/2 cups (about 12 ounces) fresh lump crabmeat, drained and picked over; 2 cloves garlic, minced; 1/4 bunch fresh flat-leaf parsley, chopped; 1/2 stick butter, melted; 30 saltine crackers (1 packet); 1 pint cherry tomatoes; 2 tablespoons balsamic vinegar; Extra-virgin olive oil, optional