Preheat the oven to 375 degrees. Spray a baking sheet with olive oil cooking spray.
Peel and slice the beets into 8 same-sized wedges.
Place the yellow beets into a bowl and drizzle a couple of teaspoons of olive oil on them then season with sea salt and freshly cracked pepper; toss to coat evenly then place on the baking sheet.
Place the red beets into the same bowl and drizzle a couple of teaspoons of olive oil on them then season with sea salt and freshly cracked pepper; toss to coat evenly then place on the baking sheet.
Add a few thyme sprigs to the baking sheet.
Side Note: I season them separately so the red beets don't dye the yellow beets.
Place the beets into the oven and roast for 15 minutes; flip and continue to roast for another 15-20 minutes or until tender.
Remove from the oven and either serve immediately or store in a sealed storage container to use throughout the week. Enjoy.