Preheat oven to 375 degrees F. Cut the beet greens off if they are attached, leaving about 1/2″ of stem. Put the beets in a baking dish and line with foil. Drizzle the beets with some olive oil, garlic salt, and pepper. Make a tight little packet with the tin foil covering the beets completely and bake for 45 minutes to an hour. Bake time depends on the size of the beets, so just bake until a knife pierces them easily. Once done, remove and cool for a little then peel, and cut into a few large pieces.
Place the beets, garlic, tahini, lemon juice, and salt into a blender or food processor. Blend until smooth. Taste and adjust seasoning accordingly, adding more lemon juice, tahini, or salt as needed.
Serve with fresh veggies and crackers.