In a large non-stick pot over medium-high heat add the butter and butternut squash. Generously season with salt and pepper.
Allow squash to cook for 10-15 minutes, stirring occasionally. You'll want to allow it to brown a touch on the sides. Once tender put it on a plate on the side.
Add the kale to the pan and 1 tablespoon of the water or broth. Generously salt and pepper and add the garlic powder. Stir the kale until it starts to wilt and turn bright green. This should take 3-4 minutes.
Add the cooked squash back to the dish and toss with the kale. Add red pepper flakes to taste.
Notes
Serve this as a side dish along with your favorite meat or seafood dish. It's also great on top of pasta, rice, or a grain like quinoa.