Heat oven to 350. Place baguette slices on baking sheet and brush with olive oil and season lightly with garlic salt. Bake until lightly toasted, 8-12 minutes. Remove from oven and let cool on baking sheet.
Meanwhile, toss lettuce, tomatoes, bacon and blue cheese in a small bowl, then dress with blue cheese dressing.
Top each slice of crostini with salad mixture, garnish with green onion and cracked black pepper.
Serve immediately.
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