Chopped Greek Salad

Name: Chopped Greek Salad
Ingredients: 1/2 pound green beans, halved crosswise; 3 tablespoons red wine vinegar; 1 garlic clove; 1/2 small shallot, chopped; 1/2 teaspoon Dijon mustard; 1/2 teaspoon dried Greek oregano; 1/2 teaspoon fresh thyme; 1 large basil leaf; 1/4 cup extra-virgin olive oil; Kosher salt and freshly ground pepper; 1 pound grape tomatoes, halved; 1/2 small red onion, halved lengthwise and very thinly sliced crosswise; 1/4 pound Greek feta cheese, crumbled (1 cup)