• Preheat the oven to 350 degrees. Line a large baking sheet with a silpat or foil (work area to roll the filled lasagna). Fill a large stock pot (minimum 4.5 quarts) with water and a pinch of salt; bring to a boil.
• While water is heating, in a large mixing bowl combine the mozzarella cheese, ricotta cheese, 1 cup of the parmesan cheese, spinach, salt and pepper. Mix well and set aside.
• In a large skillet, heat the olive oil, add the onion and garlic and sauté until the onions are translucent; 3-4 minutes. Add the ground meat and brown until no pink is visible. Pour in the sauce and allow to simmer on low for 5 minutes.
• Spoon 1/3 of the sauce evenly on the bottom of a 13 x 9-inch baking pan. Reserve the remaining sauce to top the roll ups before baking.

Preparing the lasagna noodles

• The noodles are boiled until slightly underdone to prepare for filling and rolling them. Since they are gluten-free I like to do them in batches rather than all the noodles at once however if your stock pot is large enough you may do them all at once. Add 1/3 or ½ of the noodles to the boiling water and allow to cook until slightly underdone (e.g. the noodles I used call to cook for 13-14 minutes and I cooked them 10 minutes); they should be pliable but not yet edible consistency. Remove from the boiling water with a slotted spoon or strainer and place onto the prepared baking sheet. Allow to sit 30 seconds or until they can be handled comfortably. Using a paper towel, dab up any excess water on the baking sheet.
• Place 1/3 cup of the filling onto a noodle; spread the filling to cover the full noodle. Gently roll the noodle up and place on top of the sauce in the baking sheet. Note: Place 3 roll ups end to end across the pan and 5 lengthwise; fill the pan in this pattern. Refer to photos.
• Once the pan is filled, top evenly with the remaining sauce and the 1 cup Parmesan cheese. Bake for 30 minutes until bubbly and cooked through.