Heat skillet over medium+ heat. Then, add the uncooked sausage links. Brown the sausage links for about 2-3 minutes on all the sides.
The sausage will not be cooked through, but remove the sausages from the skillet. Place sausage on a cutting board. Slice the sausage links into 4-5 diagonal pieces and drape tin foil over them. Set aside.
Next, add 1 tbsp olive oil to the skillet (still over medium). Add the onions and bell peppers in the same skillet and saute for 2-3 minutes.
When peppers and onions have started to soften add the garlic powder, salt, pepper, and red flakes. Continue stirring the peppers and onions for about 3 minutes.
Pour balsamic vinegar and water into the skillet with the peppers and onions, and scrape the bottom of the skillet to release all the brown bits.
Put the slices of sausage pieces back into the skillet, stir and reduce the heat to medium-low. Cover to cook through for about 10 minutes.
Then, uncover the skillet and increase the heat to medium. Cook for 3 more minutes or just until the liquid is evaporated and the sausage is cooked completely.
Top with fresh chopped parsley and serve.
