Better than Trendy Baked Tomato and Feta Pasta

Name: Better than Trendy Baked Tomato and Feta Pasta
Ingredients: Nonstick cooking spray, for the baking dish; 3 tablespoons extra-virgin olive oil; 1 tablespoon sherry vinegar; 2 cloves garlic, grated on a rasp; Kosher salt and freshly ground black pepper; 2 pints cherry tomatoes; 6 to 8 mini bell peppers, halved and seeded (about 2 cups); One 20-ounce package refrigerated cheese tortellini (6 cups); 2 cups chicken stock; One 8-ounce block feta, sliced into about 8 pieces; 4 to 6 fresh basil leaves, torn