Melt 1 tablespoon of Land O Lakes® Unsalted Butter in a very large skillet with a tight-fitting lid over medium high. Once the butter is melted, add the sausage. Cook, breaking apart the meat, until it is browned and cooked through, about 5 minutes. Transfer the sausage to a plate.

Reduce the skillet heat to medium. Add the remaining 4 tablespoons butter. Once melted, add the squash and onion. Cook, stirring occasionally, until the squash is tender and golden, about 8 to 10 minutes. Add the garlic, salt, pepper, rubbed sage (if using fresh sage, wait to add it until the end), and nutmeg. Continue cooking until the garlic is softened and fragrant, about 1 additional minute.

Add 1 1/2 cups chicken broth and gnocchi to the skillet. Increase the heat to medium high. Stir to coat the gnocchi, then cover the pan. Cook, covered, until the gnocchi is just tender, about 5 minutes. Uncover and stir in the sausage. Stir in the spinach a few handfuls at a time, allowing it to wilt. If you’d like a looser sauce, add a bit more chicken broth. Sprinkle with Parmesan and season to taste with additional salt, pepper, and red pepper flakes. Enjoy hot.