Preheat oven to 350 degrees F. Use an 8x8 baking dish and cut crepes to fit the dish.
Make sure to drain ricotta, by sitting on paper towel in colander. Some ricotta cheese is more moist than others.
Mix ricotta with egg, spinach and pecorino romano. If not using spinach, add some chopped parsley or chopped basil. Season with salt and pepper.
Layer the crepes with ricotta. You can cup the crepes to fit a square pan. Start with small amount of sauce, crepe, ricotta cheese, and so forth. Finish with sauce and mozzarella cheese.
Bake at 350 F. for 20 minutes and turn up to 400 degrees for another five minutes. You may need more time if cheese isn't melted enough.
If you don't want to use spinach, you can layer the very last layer with the cooked crumbled Italian Sausage.
Keto Crepes
Mix almond flour with salt and xanthan gum. Set aside.
Mix eggs with almond milk, melted butter.
Add dry mixture. Add a few teaspoons water if you need to thin down crepes.
Heat crepe pan. I used a 7 inch crepe pan, which made 8 crepes.
Add baking spray. Hold crepe pan off the stove and add 1/4 crepe batter. Swirl around to cover pan. Put back on stove and cook for about 4 minutes on medium. Turn over for about 10 seconds. NOTE: Makes up to 8 crepes. If you are using a larger pan, you'll make less crepes and can cut them to fit your 8 x 8 baking dish.