Steak Crostini with Avocado-Horseradish Mayonnaise

Ingredients

• 1  avocado ripe peeled seeded
• 6 inch diagonally baguette french toasted cut
• 0.5 teaspoon pepper black freshly ground
• 3 tablespoons mayonnaise fat-free
• 0.5 pound flank steak 
• 1  garlic clove crushed
• 0.8 teaspoon kosher salt divided
• 1 teaspoon juice of lime 
• 0.5 teaspoon oregano dried
• 0.8 teaspoon wasabi ( Japanese horseradish)

Equipment

• food processor
• bowl
• grill

Directions

1. Combine dried oregano, 1/2 teaspoon salt, and pepper in a small bowl; rub evenly over flank steak.
2. Let stand 30 minutes.
3. Combine avocado and next 3 ingredients in a food processor; process until smooth.
4. Add remaining 1/4 teaspoon salt and mayonnaise; pulse until blended.
5. Prepare grill.
6. Place steak on grill rack coated with cooking spray; cover and grill 8 to 10 minutes or until desired degree of doneness, turning occasionally.
7. Remove steak from grill, and let stand 5 minutes.
8. Cut steak diagonally across grain into thin slices.
9. Place steak slices on toasted baguette pieces; top each with 2 teaspoons avocado spread. Reserve remaining spread for another use.
10. Garnish with oregano sprigs, if desired.