Step 1

Using on/off turns, finely chop garbanzo beans and garlic in processor. Add 3 tablespoons lemon juice and remaining ingredients; process to coarse puree. Season to taste with salt and pepper and more lemon juice, if desired. DO AHEAD Can be made 1 week ahead. Transfer to airtight container and chill.

Step 2

Spread 2 tablespoons hummus over each bread slice. Top 2 bread slices with sliced cucumber, mint, and cilantro, dividing equally. Arrange slices of feta atop cilantro. Top each with second bread slice and press gently to compact slightly. Cut sandwiches in half.

Step 3

*Available at some supermarkets and at natural foods stores and Middle Eastern markets.