Vegan Bean and Oat Burgers

Name: Vegan Bean and Oat Burgers
Ingredients: 125 g rolled oats, soaked in lukewarm salty water for 30 minutes; 1 can of beans, drained and puréed; 80 to 100 g whole wheat bread crumbs; 1 onion, chopped; 3 cloves garlic, chopped; 1 medium carrot, chopped; ½ a medium sized celery root, chopped; small bunch of parsley, chopped; 1 tablespoon fresh lemon juice; 2 teaspoons Dijon mustard; 1 teaspoon oregano; salt, pepper; olive oil; serving: salad, mustard, ketchup, sliced red onion, sprouts, ciabatta or rolls