1 lb Penne Rigate
2 cup of diced cremini mushrooms
2 cup baby spinach
2 tsp chopped garlic
3 cups of cherry tomatoes
3 tbsp olive oi
l 2 cup diced fresh mozzarella
Fresh parmesan
Salt and pepper to taste
Cut cherry tomatoes in half and sauté in olive oil for 5 minutes at medium heat. Add garlic and after a minute, add mushrooms. Cook for additional five minutes and toss in the baby spinach. Turn off heat and let spinach wilt. Once ready, add bits of mozzarella to the strained pasta and mix with the vegetables. Sprinkle with Parmesan cheese.
Foodfrisker.com 
Where do I find or buy cremini mushrooms?
You can find them in the produce section at your local supermarket, right next to the white button mushrooms.