Place slices of bread onto a baking sheet or stone. Bake for 3 minutes, flip and bake an additional 3 minutes until toasted.
Remove from the oven and immediately rub each slice with the cut side of the clove of garlic. Brush the tops of the garlic-infused toasts with olive oil; set aside.
Gently mix the rest of the ingredients in a medium bowl. Spoon tablespoon-sized portions of the guacamole mixture onto each slice of toasted bread. Serve immediately.