1/8 teaspoon cayenne pepper (or a pince of red pepper flakes)
Heat canola oil in a large skillet over medium low heat. Add sausages and brown them slowly, turning often until evenly browned all over. This take about 12-15 minutes. Remove sausages from pan and set aside.
Raise heat to high. Add peppers and onions, cooking for 3-4 minutes, searing some of the pieces and until they begin to get soft. Add garlic, sauté for one more minute.
Add tomatoes, oregano and cayenne pepper. Add sausages back in to pan on top of peppers/onions. Cover, reduce heat to low and simmer for 15-20 until peppers and onions are very soft.
Add salt and pepper to taste. Allow to cool slightly before cutting up sausage into bite sized pieces and serving over rice/pasta/polenta, or leaving them intact and serving in a crusty bun.