Bring an extra large pot of water to a boil
While bringing water to a boil, fill a large bowl with ice water
Once the water is boiling, add the fava beans
Let boil for 6-8 minutes, stirring occasionally
Using a large slotted spoon, move the fava beans to the prepared ice water bath
This will stop them from cooking and allow the outer shell to slide right off
Once they’ve cooled, drain the ice water
Shell the fava beans by removing both the large outer bean and the inner white bean
Put the shelled fava beans, garlic, olive oil and lemon into a food processor or blender. Blend until smooth.
Salt and pepper to taste
Add a tablespoon or two to the prepared crostini
Top with a few slices of manchego cheese
Drizzle with olive oil and add kosher salt or cracked pepper