Preheat oven to 400 degrees (200 Celsius)
Chop sausage, vegetables and garlic. Cut the potatoes fairly small so they will cook fast.
Add to plastic bag
Add remaining ingredients to bag
Shake to combine ingredients
Add parchment paper to pan
Add all ingredients to pan
Bake for 25-30 minutes or until potatoes are fork tender. Stir as necessary so everything is cooked evenly.