For the pasta: In a large bowl, add the ricotta, spinach, cheese, heavy cream, flour, red pepper flakes, nutmeg, garlic and lemon zest, if using. Taste and season with salt and pepper. Add the pasta, then fold to combine and pour into a casserole dish that you coated with cooking spray.
Step 2
Preheat the oven to 375 degrees F.
Step 3
For the topping: Spread the cheese over the top of the casserole. In a medium bowl, add the tomatoes and lemon juice, if using, and toss to combine. Allow to sit for 5 minutes.
Step 4
Add the oil, Italian seasoning and salt to the tomatoes. Toss, then scatter over the top of the casserole. Bake until the sides are bubbly and the top is golden in parts, 20 to 30 minutes. Garnish with basil and serve warm.