Instructions

1. Add 1 tablespoon of olive oil to a large skillet over medium-high heat. After a minute, add the Italian sausage to the hot pan. Cook the sausage, breaking it into small pieces with the back of wooden spoon, until the sausage is lightly browned and cooked through, about 7 minutes. Remove from heat, and add the tomato sauce directly to the pan. Add a quarter cup of water to the jar and swish around to get all of the remaining sauce out, and add to the pan. Stir to combine and set aside.
2. While the tomato sauce cools slightly, make the ricotta mixture. In a medium bowl, combine the ricotta, Parmigiano, oregano, Tuscan salt, spinach and basil.
3. Bring a large pot of salted water to a boil over high heat. Blanch the pasta sheets until just slightly cooked, about 5 minutes. Remove the pasta from the water using tongs and lay out on a baking sheet to cool slightly.
4. Preheat the oven to 400 degrees F.
5. Prepare a 9x13 inch baking dish by evenly coating with 2 tablespoons of olive oil.
6. Spread a layer of the sausage tomato sauce, about 1 cup, to the bottom of the pan. Lay down a layer of the lasagna sheets to cover (there will be 4 pasta layers total). Take half of the ricotta mixture and dollop over the lasagna sheets, and spread out to evenly coat. Add another layer of lasagna sheets, then half of the remaining sausage tomato sauce. Add the lasagna sheets on top, one more layer of ricotta, a final layer of pasta, then one final layer of sausage tomato sauce. Top evenly with the mozzarella and Parmigiano.
7. Cover the baking dish with foil and bake for about 30 minutes, when the cheese has started to melt and you can hear the lasagna sizzling. Remove the foil and finish baking for about 15 minutes until golden brown.
8. Allow the lasagna to cool and set for at least 20 minutes before slicing and serving.