Set up grill for direct cooking over medium heat.
In a microwave-safe bowl, combine butter, garlic spread, and seasoning. Cook in microwave on high setting about 1 minute. Brush each slice of bread on 1 side with butter mixture. Place bread on grill, buttered-side down, and cook for 1 minute. For nice grill marks on bread, turn each slice 1/4 turn and grill for an additional 30 seconds.
Remove from grill and serve warm.
INDOOR: Prepare butter spread and brush 1 side of bread as directed. Heat a skillet over medium heat. Place bread, buttered-side down, in a skillet and cook until golden, about 2 minutes.