The day before you want to make the burgers, soak the chickpeas and baking soda in lukewarm water. The beans will expand as they soak, so make sure to cover them in several inches of water.
Add the chickpeas, beets, onion, parsley, dill, garlic, cumin, salt, pepper, and cayenne to a food processor. Blend until mostly smooth. Don't over mix.
Transfer the mixture to a bowl and refrigerate for an hour.
Preheat the oven to 400°F. Line a baking sheet with parchment paper. Remove the beet mixture from the fridge. Stir in the baking powder and oat flour.
Scoop into ½ cup patties. Place on the baking sheet.
Bake for 20-30 minutes, flipping halfway through.
Serve burger-style with your favorite toppings. Enjoy!