Preheat oven to 400°F (200°C). In a bowl, combine butternut squash puree, sel de cuisine blend, minced garlic, and salt and pepper to taste. Mix well.
In a separate bowl, combine ricotta cheese, 1/4 cup of grated Parmesan cheese, and salt and pepper to taste. Mix well.
Lightly grease an 8x8 inch baking dish.
Spread a thin layer of the butternut squash mixture on the bottom of the dish, layer 2 whole wheat lasagna noodles, then spread half of the remaining butternut squash mixture over the noodles.
Layer 2 more noodles on top, then spread half of the ricotta mixture over these noodles.
Repeat the layers: noodles, remaining squash mixture, noodles, remaining ricotta mixture.
Sprinkle the remaining 1/4 cup of Parmesan cheese over the top layer.
Cover the dish with foil and bake for 45 minutes. Remove foil, top with sliced cheese, and bake/broil for an additional 5-10 minutes, or until cheese is melted and bubbly.