These simple vegetarian tacos are loaded with flavor and are easy enough to assemble in the morning for a quick and delicious breakfast that'll get you started and keep you going all day long.
In a small pot, heat oil over medium. Add onion and garlic and cook until onion is soft and garlic is fragrant, 3 minutes. Add cumin and cook until fragrant, 1 minute. Add beans and 1/2 cup water and simmer until beans are heated through, 3 minutes. Transfer to a food processor and process until smooth. Season to taste with salt and pepper. Serve with tortillas, cheese, avocado, lettuce, and jalapenos.
In a heavy skillet, toast tortillas over medium until browned in spots. Or, wrap a stack of them in parchment-lined foil and warm in a 400-degree oven for 5 minutes.