Serves 4 / Prep tip: For even quicker cooking, cut potatoes into 1-inch cubes.
Serves 4 / Ingredient tip: Precooked polentais sold in plastic-wrapped logs. Prep tip: Chop the vegetables while the polenta cooks.
Serves 4 / If you prefer, double up on tortillas to ensure tacos won't fall apart. Serving tip: Top with plain yogurt to tame the spicy heat.