Assembly: Start by pouring the olive oil in the bottom of the dutch oven followed by 1/2 cup of pasta sauce spread evenly. This will help to prevent sticking. Next place a layer of lasagna noodles followed by 1/2 cup of sauce, 1/3 cup of baby spinach, and 1/2 cup of cheese. Do this two more times to create layers. For the top layer use noodles, 1/2 cup of sauce, and 1/2 cup of cheese. Sprinkle on dried oregano and dried basil.