Preheat oven to 425F.

Boil 5 cups water in a medium pot. Add peeled and cut sweet potatoes to boiling water and allow to boil until soft enough to easily poke with a fork.

While sweet potatoes are boiling, saute spinach over medium heat until wilted. Salt to taste and set aside to cool.

Add boiled sweet potatoes and spinach to a bowl and mash until incorporated.

Add in 1/4 cup coconut flour and mix. You should be able to roll the mixture into balls without it being too sticky. Add in more coconut flour by the tablespoon if mixture is too sticky. I suggest not adding more than 1/2 cup of coconut flour in total, or the burgers will begin to dry out.

Form into patties and place on a baking sheet. Roast in the oven for 20-25 minutes or until they begin to brown around the edges.