Preheat your oven to 400 degrees f. and line a large baking sheet with parchment paper.
Add the diced beets, butternut squash, and garlic to the baking sheet.
Sprinkle everything with sea salt, pepper, and thyme.
Drizzle with your oil, balsamic, and honey.
Use your hands to toss everything really well, then spread evenly in a single layer onto the sheet pan.
Roast for 25-30 minutes, flipping halfway, or until tender and golden.
Sprinkle with fresh thyme if desired before serving.