Heat 4 tablespoons olive oil in a sauce pot over medium heat; once hot, place the onion in the pot and cook for 2 minutes, stirring periodically. Now add the garlic, potatoes and sausage, continue cooking for an additional 4 minutes. After cooking, remove from heat and place ingredients in a bowl. Add red bell pepper, parsley, thyme and mustard to bowl and stir all ingredients thoroughly. Divide into 10 portions.