Spinach Mung Bean and Millet Burgers

Name: Spinach, Mung Bean, and Millet Burgers
Ingredients: 1/2 cup cooked mung beans; 1/2 cup cooked millet; 3/4 cup fresh spinach, washed and stems trimmed; 2 large leeks, cleaned and sliced; 2 cloves garlic, roughly chopped; 3 tablespoons ground flaxseed; 1 1/2 teaspoons ground cumin; 1/2 teaspoon cayenne pepper (or chili powder); Salt to taste; Olive oil for cooking