Lamb Burger with Mint, Feta, and Balsamic Onions

Lamb Burger with Mint, Feta, and Balsamic Onions
It's all about balance in these spiced lamb burgers: fatty meat, sweet balsamic red onions, salty feta, and peppery greens.Ted + Chelsea Cavanaugh

At the Marketplace at Emerald Valley in Washington, Pennsylvania, lemon zest and fresh mint go into every lamb burger patty. A tangle of sweet balsamic onions, a hint of chile, and briny feta balance the charred meat and brioche bun. Ground lamb falls on the fattier side; if using a grill, watch out for flare-ups.

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