blistered tomatoes and feta with orzo

Name: blistered tomatoes and feta with orzo
Ingredients: 4 cloves garlic; 2 pints cherry tomatoes; 3 tablespoons olive oil, (divided); 2 teaspoons kosher salt, (divided, plus more to taste); 1/2 teaspoon red pepper flakes, (divided); freshly ground black pepper; 1 (8-ounce) block feta, (cut into four slabs); 1 cup orzo; 1 tablespoon tomato paste; 2 tablespoons balsamic vinegar; 1 (15.5-ounce can) white beans, (drained and rinsed); a few handfuls baby spinach; handful torn fresh basil leaves, (plus more for serving); toasted baguette, (for serving)