Preheat oven 425*.
Trim the ends of the Brussels sprouts and pull off any loose outer leaves. Slice each in half, lengthwise.
Mix Brussels Sprouts, garlic, olive oil, vinegar, garlic salt & pepper in a bowl until well combined. Spread on to a greased baking sheet or jelly roll pan.
Roast in the oven at 425 for 20-25 min until tender. Stirring occasionally. Broil for the last few minutes. Enjoy!