Start by boiling, your spinach in one pot, and the pasta in another
Mean while that boils, set your oven at 350 degrees, and start mixing the rest of the ingredients; egg, ricotta cheese, parmesan cheese, salt, pepper, and garlic powder
Once lasagna pasta is ready, lay them out on wax paper and let them air dry a bit. Mince the boiled spinach and mix into cheese mixture.
Spread the cheese/spinach mix over the pasta, and roll
In a casserole, add a layer of the spaghetti sauce, and set each roll down over, with the seam side facing down.
..Finally bake them in the oven for 40 minutes with a foil cover.
Paired with a small salad, it was perfect!