Ravioli with Creamy Mushroom Sauce

Name: Ravioli with Creamy Mushroom Sauce
Prep time: 5 min
Cook time: 20 min
Total time: 25 min
Yield: 4
Ingredients: Ingredients; 1 lb cheese ravioli (store-bought or homemade); 2 cups sliced mushrooms (button, cremini, or a mix); 1/2 cup heavy cream; 1/4 cup grated Parmesan cheese; 1 small onion, finely chopped; 2 cloves garlic, minced; 2 tbsp unsalted butter; 2 tbsp olive oil; Salt and black pepper to taste; Fresh parsley for garnish (optional)