Butternut Squash Gnocchi with Italian Sausage

tablespoons Land O Lakes® Unsalted Butter, divided

ground sweet Italian turkey sausage (removed from casings if needed)

small butternut squash (about 1 1/4 pounds), cut into 1/2-inch cubes (about 3 1/2 cups cubes total; if you have a little extra, use a very large skillet and add it all if you really love squash, or reserve the extra for another time)

small yellow onion, diced, about 1 cup

garlic, minced

kosher salt, plus additional to taste

black pepper

rubbed sage or 1 tablespoon chopped fresh sage

ground nutmeg

–2 cups low-sodium chicken broth

potato gnocchi*

loosely packed baby spinach (about 5 ounces or 5 generous handfuls)

freshly grated Parmesan (optional—we loved it both with and without)

red pepper flakes (optional)