Place just a little bit of oil or butter into your pan or griddle. Heat the pan/griddle to medium heat.
Add in your peppers and onions. They don’t have to be in a single layer – it’ll all work out.
Sprinkle with garlic powder/salt.
Sprinkle with a little sugar. Not too much, but it helps the veggies to caramelize.
Put in some dashes of worcestershire sauce. Better to go too little than too much as you can always add more later.
Let them cook. Stir every few minutes to evenly heat.
They’re done when they’re as crisp or soft as you’d like.