Bake sweet potato: Stab your sweet potato all over with a fork or knife. Cover with salt and olive oil. Wrap in foil and bake at 200°C for ~60 minutes until very soft. Go up to 75 minutes if using a large potato.
Prepare topping: Dice your onion and capsicum. Add to a pan on medium-high heat with 1 tbsp olive oil. Once translucent, add beef mince. Break apart beef mince, once cooked and no longer any pink bits remain, add taco seasoning.
Potato preparation: Remove your sweet potato from the oven, be careful when opening the foil, it will be very hot and the steam can burn! Cut it down the middle and mash with a fork.
Bake your potato: Add your taco-seasoned beef, onion and capsicum mix on top of the potato. After, add mozarealla. Return to oven for 5 - 10 minutes until cheese is melted and brown.
Watch it bake in the oven! The cheese can burn quickly.
Remove from oven: Add your sauce of choice, enjoy!