Sauté the peppers, onions, and carrot in oil until soft.
Add in the teaspoon of cumin seed and continue sautéing until fragrant, only about another minute.
Rinse your beans.
Add the can of Rotel tomatoes and black beans to the vegetables.
Season with salt & pepper. Add a splash of water.
Cook for a few minutes longer on low; remove from heat.
Add cilantro and puree.
Mix in juice from ½ lime. Adjust seasoning as necessary.
Notes
To make Ro*Tel tomatoes: Heat 1 tbsp of olive oil in a pot. Add 1-2 fresh jalapenos rough chopped (seeds & all). Saute for a few minutes. Add in one 14oz can of diced tomatoes & a pinch of salt. Cook until slightly thickened.