Step 1: Heat a large pan over medium-high heat. Add oil and swirl to coat.

Step 2: Add onion, mushrooms, and garlic to pan- saute 3-5 minutes until veggies are soft.

Step 3: Add tomatoes, chicken stock, oregano, in that order and bring to a boil.

Step 4: Add noodles and stir until they are covered with the sauce.

Step 5: Cover and reduce heat to medium-low for 7 minutes or until pasta is done.

Step 6: Stir in spinach in small batches until it wilts then remove the pot from heat.

Step 7: Add salt and as much parmesan as you like.

Step 8: Enjoy :)