Whipped feta and grilled tomatoes may just be our favorite-ever additions to a juicy lamb burger.
This recipe is courtesy of Not Without Salt.
Combine the feta and 3 tablespoons of olive oil in a food processor, and process until completely smooth, about 2 minutes.
In a medium bowl, combine the lamb, herbs, garlic, salt, and 1 tablespoon of olive oil. Mix well. Form the mixture into 4 patties.
Grill the patties over high heat until cooked through, about 2-3 minutes per side. Remove the burgers from the grill and set aside.
While the burgers rest, brush the tomatoes with the remaining olive oil, and place on the grill. Grill until char marks appear, and the tomato just starts to soften, about 2 minutes per side.
Grill the buns until lightly toasted. Spread the whipped feta on both halves of every bun. Add the burger, and top with grilled tomato and fresh arugula.