Step 2
Mash 1/2 of the black beans in a small bowl. Transfer to the Dutch oven with the 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, stirring occasionally, for 2 hours.