Heat the cooking oil in a large sauté pan. Add the diced onions, peppers, and garlic. Cook until they are tender.
Add in the mince meat and continue to cook until it is no longer pink.
Stir in the salsa, cumin, and chili powder.
Remove from the heat and pour into a serving bowl.
Divide the rest of the toppings into small bowls – the beans, diced tomatoes, cheddar cheese, yogurt, avocado, and lettuce.
Warm the tortillas by wrapping them in foil and heating in the oven (300F) for 5-7 minutes. Or you can warm them in the microwave oven by wrapping them in a towel and heating for 20-30 seconds.
Place all of the ingredients on a large serving board or baking tray.
Serve on the table and let the kids build their own tacos.