Heat a skillet over medium low heat. Add the beef, salt, and pepper. Use a wooden spoon to stir the salt and pepper into the beef, while breaking it up into small pieces. Let cook until browned, this will take about 5 minutes.
Whisk the paprika, chili powder, cumin, and garlic together, and pour it over the beef. Add the onion. Stir together and let simmer for 6 minutes. Serve with your favorite taco shells and toppings.