In a medium pan have water boiling. Wash the three large beets and cut into about ⅓" slices. Put beet slices into the boiling water and allow to simmer for about 1 hour. Drain water and dab dry the patties.
Preheat your George Foreman grill to 375°. Place the patties on the grill and close the lid and allow to grill for about 4 minutes.
Place patties on buns and add sliced onion and micro greens on top.
In a bowl combine all ingredients and mix until well blended. Spread on buns prior to adding slider patty.
For the Evolve Grill preheat to 350° and grill for 3-4 minutes per side.
For the Indoor|Outdoor grill preheat to Setting 4 and grill for 3 minutes preside with cover on the grill.