To prepare a spaghetti with shrimp mushrooms pasta recipe, first you need to prepare the pasta. First, you'll need: 12 cup of ricotta cheese, 2 tablespoons of olive oil, 1 tablespoon of butter, and 2 tbsp. of salt and pepper to taste. Then, preheat the oven to 425 degrees F (204 degrees C) and cook the spaghetti until it's al dente, about 8 to 10 minutes.