Preheat your oven to 400 F.
Melt some cooking fat and sauté the onion and the garlic until softened, about 5 minutes, in a skillet or a saucepan placed over medium-high heat.
1 onion, Cooking fat, 3 garlic cloves
Add the beef and cook until browned, about 6 minutes.
1.5 lbs. ground beef
Add the tomato sauce, tomato paste, basil, oregano, and season with salt and pepper to taste. Turn the heat down to low and let simmer for about 10 minutes.
4 cups tomato sauce, 1 tsp. dried basil, 1 tsp. dried oregano, Sea salt and freshly ground black pepper, 4 oz. tomato paste
To prepare the lasagna: alternate layers of butternut squash slices with layers of meat sauce in a baking dish. Keep making layers until you’ve used all of the ingredients.
1 large butternut squash
Bake for about 25 minutes (or until the squash is soft) in the preheated oven.