Our affection for lentils is twofold: The health-minded side of us adores their high protein and folate levels, while our palate craves the legumes' earthy flavor. Our Test Kitchen's falafel-style lentil burgers are both nutritious and delicious: Black beluga lentil patties are beefed up with sweet potato, red onion, panko breadcrumbs and spices, then stuffed into mini pitas and slathered with tangy feta-yogurt-mint sauce. Put two patties into a large pita for a more substantial sandwich. Either way, prepare to fall in love.