Place potatoes, onions and garlic in a large bowl and drizzle with olive oil. Toss to coat. Sprinkle with Dom's Italian Blend.
Line a cookie sheet with foil and spray with Pam. Arrange potatoes and onions in one layer on cookie sheet and bake for 25 minutes, turning once or twice.
Raise heat to broil and broil until crisp, watch closely not to over-brown.