I decided to try this sweet potato lasagna, since it has fewer carbs than a regular lasagna. I mean, sweet potatoes are a starchy vegetable, but at least they’re a vegetable, right? Well, the kids weren’t big on it, and the Engineer said he liked everything except the sweet potatoes. So even though I liked it (not as much as regular lasagna, but still), I don’t think I’ll make it again, and I’m going to toss the recipe I had for a similar vegetarian lasagna. Only try this if the people at your table like sweet potatoes as much as I do!
3 large sweet potatoes, peeled and sliced 1/8"-thick (about 2 lb.; I only needed 2 potatoes)
2 Tbsp. extra-virgin olive oil
1 large onion, chopped
2 cloves garlic, minced
1 lb. sweet Italian sausage, casings removed
freshly ground black pepper
2 cups marinara
1 (5-oz.) package baby spinach
16 oz. lactose-free ricotta
1 large egg, beaten
¾ cup freshly grated lactose-free parmesan, divided
1 tsp. dried oregano
1 ½ cup shredded lactose-free mozzarella
freshly chopped parsley, for serving
Preheat oven to 375 °F and grease a 9”-x-13” baking pan with cooking spray. In a large skillet over medium heat, heat oil. Add onion and cook until soft, 5 minutes then add garlic and cook until fragrant, 1 minute more. Add sausage and cook, breaking up meat with a wooden spoon, until no longer pink, about 6 minutes. Season with salt and pepper.
Pour in marinara sauce and bring to a simmer. Cook until sauce thickens slightly, 5 minutes. Add spinach and cook until spinach is wilted. Remove from heat.
In a large bowl, stir together ricotta, egg, ½ cup parmesan, and oregano. Season with salt and pepper.
Spread a thin layer of marinara mixture evenly across the bottom of prepared dish. Layer sweet potatoes on top of sauce, slightly overlapping. Spread about ⅓ of ricotta mixture over sweet potatoes then pour ⅓ of remaining meat sauce on top. Repeat to make two more layers. Top lasagna with mozzarella and remaining ¼ cup Parmesan.
Cover with aluminum foil and bake until sweet potatoes are almost cooked through, about 45 minutes, then remove foil and bake until sweet potatoes are fork tender and cheese is lightly golden, 15 minutes more.
Let rest 10 minutes, then garnish with parsley before serving.