Prep Time: None
Cook Time: 60
Serves: Serves: 10
Toss squash with olive oil, 1-1/2 tablespoons sage, 1 teaspoon salt and 1 tablespoon spice rub; spread in a single layer on a foil-lined 15 x 10-inch jelly roll pan. Bake in preheated 400°F oven until tender, about 50 minutes, stirring at least once. Transfer to a food processor; process until smooth.
Meanwhile, cook lasagna noodles in salted water according to package directions. Drain; rinse with cold water and arrange in a single layer on wax paper.
Combine Ricotta cheese, eggs and 1 teaspoon nutmeg in a large bowl. Stir in 1 cup shredded cheese; set aside.
For sauce, melt butter in a large saucepan over medium-high heat. Add garlic and remaining 2 tablespoons sage; cook and stir 30 seconds. Add flour, cook and stir until well combined. Whisk in milk and remaining spice rub and salt; bring to a boil, whisking frequently. Reduce heat; simmer sauce 8 minutes or until slightly thickened, whisking frequently.
Stir pureed squash into Ricotta cheese mixture. Spread evenly over lasagna noodles, leaving a 1/2-inch border at one short end of each noodle (about 1/4 cup mixture per noodle). Sprinkle 2-1/2 cups shredded cheese over all (2 tablespoons per noodle). Roll up each noodle, starting at the end without the border. Place rolls seam-side down in two buttered 13 x 9-inch glass baking dishes. Pour sauce evenly over rolls; top with remaining 1-1/2 cups shredded cheese.**
Bake at 375°F, uncovered, 50 to 55 minutes or until cheese is golden brown and sauce is bubbly. Let stand 10 minutes before serving so sauce thickens.