Butter, in a pan.
A pound of ground meat (tried three types so far with great success: turkey, chicken, beef, all depending on how it looks/price).
Bell pepper. Chopped to your own preferred size.
Half a red onion. Chopped to your own preferred size.
A bit of minced garlic.
Spices: Paprika, garlic salt if you need more garlic, cayenne pepper, black pepper, salt, chili powder. Throw on some Worcestershire.
There are no measurements; this is all about customization.
You’re an adult, you figure out the amounts.