Ingredients
- 2 tablespoons extra-virgin olive oil
- 1 medium yellow onion, chopped
- 2 medium stalks celery, chopped
- 2 medium carrots, chopped
- 6 cloves garlic, chopped
- ¾ teaspoon salt
- ½ teaspoon ground pepper
- 1 ½ teaspoons dried oregano, divided
- 2 tablespoons tomato paste
- 1 (28 ounce) can no-salt-added crushed tomatoes
- 4 cups lower-sodium vegetable broth
- 1 cup whole-wheat elbow macaroni
- 1 (5 ounce) package baby spinach
- ¼ cup grated Pecorino Romano cheese
- 2 teaspoons grated lemon zest
- 1 tablespoon lemon juice
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