Spinach and Ricotta Stuffed Ravioli

2 cups all-purpose flour
3 large eggs
1 tablespoon olive oil
1/2 teaspoon salt
1 cup ricotta cheese
1 cup fresh spinach, chopped
1/4 cup grated Parmesan cheese
1/4 teaspoon nutmeg
Salt and pepper to taste
2 cups Alfredo sauce
Fresh parsley or basil for garnish