ingredients 1.5 tablespoons olive oil 22 ml 1 medium yellow onion , chopped 5-6 large garlic cloves , chopped 3 cups vegetable broth , divided 2 x 14.5 oz can diced tomatoes , i used fire roasted 1/3 cup chopped italian basil 1 teaspoon salt , or to taste 1/2 teaspoon black pepper , or to tast