Ingredients
- 2 Tbsp. extra-virgin olive oil
- 1 cup diced yellow onion
- 1 pint cherry tomatoes, halved
- 8 oz. dry penne pasta
- 1 cup marinara sauce
- 2 cups water
- ½ tsp. garlic powder
- ½ tsp. dried oregano
- ½ tsp. each kosher salt and cracked black pepper
- 2 to 3 generous handfuls fresh baby spinach
- ⅓ cup heavy cream
- ½ cup shredded mozzarella cheese
- ¼ cup chopped fresh basil leaves
- Grated Parmesan cheese for garnish (optional)
Instructions
- Heat 2 Tbsp. oil in a large skillet with a fitted lid over medium heat. Add onion and tomatoes; cook 7 to 8 minutes, until the onion is soft and tomatoes are broken down and jammy.
- Add pasta, marinara sauce, water, garlic powder, oregano, salt, and pepper. Increase heat to medium-high and bring mixture to a simmer. Cover and cook, stirring occasionally, until the pasta is al dente, 10 to 12 minutes.
- Remove lid and stir in heavy cream, spinach, and cheese. Stir continuously until spinach wilts and cheese melts, about 2 minutes. Garnish with fresh basil and Parmesan, if using.