Ravioli in Creamy Parmesan Sauce - Serving Dumplings

Ingredients

• 10 ounces mushroom ravioli (or with your favorite filling)
• 1 tbsp olive oil
• 1 tbsp unsalted butter
• 2 garlic cloves (minced)
• 1 tsp lemon juice
• 1 cup cream 20% fat (or half-and-half, at room temperature)
• 2 ounces grated Parmesan
• ¼ cup dry white wine (or chicken broth)
• 1 tsp salt
• 1 tsp black pepper
• ¼ tsp red pepper flakes
• about 10 fresh sage leaves
• 2 ounces walnuts (roughly chopped)