Step 2
Mash 1/2 black beans in a small bowl; transfer to the Dutch oven with remaining whole black beans. Add diced tomatoes, 2 cups water, corn, lentils, quinoa, chili powder, brown sugar, paprika, salt, turmeric, oregano, cumin, red pepper flakes, and black pepper; stir to combine. Bring to a boil, then reduce heat to low, and simmer for 2 hours, stirring occasionally.