Olive oil cooking spray
6 oz, about an 8-inch long thin loaf, cut into 16 slices
Reduced-fat sour cream
Uncooked red onion(s)
3 Tbsp, chopped, diced
¼ tsp, freshly ground (plus extra for garnish)
2 cup(s), baby leaves
Deli style roast beef slice(s)
8 oz, thickly cut into 8 pieces and then each piece cut in half to yield 16 pieces total
- Preheat oven to 325ºF. Coat a cookie sheet with cooking spray.
- Place bread on prepared cookie sheet and lightly coat with cooking spray. Bake until lightly browned and crisp, about 10 minutes; let cool.
- In a small bowl, combine sour cream, onion, horseradish and pepper.
- To assemble crostini, top each piece of toasted bread with 1 slice beef, 1 teaspoon horseradish sauce, a grind of black pepper and a few arugula leaves. Yields 2 crostini per serving.