1 tablespoon chopped red onion + 2 tablespoons crumbled feta + 1/4 cup fresh spinach tossed with 1/2 teaspoon extra-virgin olive oil + 1 ounce tzatziki sauce
A quarter pound of lean ground sirloin and a hearty whole-grain bun start you out at 250 calories. Now you’re ready for all those tasty toppings. By Sidney Fry, MS, RD
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