PENNE WITH GREEK YOGURT CAESAR SAUCE

Ingredients

• ¾ cup Hidden Valley® Greek Yogurt Creamy Caesar dressing
• ½ lb . penne pasta ((8 oz.))
• 1 small onion (, diced)
• 2 cloves garlic (, minced)
• 1 tbsp . olive oil
• 15 oz . can of diced fire-roasted tomatoes
• ½ tsp . dried oregano
• 1 pinch red pepper flakes (, or to your taste)
• salt and fresh ground pepper (, to taste)
• ¼ cup Parmesan cheese (, grated fine)
• extra Parmesan for sprinkling atop finished pasta when serving
• 5 oz . fresh baby spinach