Ground turkey is the standard lean alternative to ground beef–and a good one–but burgers made from it can be dry and bland. These turkey burgers are particularly moist and flavorful because mushrooms are used to extend the ground meat.

• 2 slices whole-wheat sandwich bread, crusts removed, torn into pieces
• 8 ounces white mushrooms, wiped clean
• 3 teaspoons extra-virgin olive oil, divided
• 1 medium onion, finely chopped
• 2 cloves garlic, minced
• ½ cup Scallion-Lemon Mayonnaise, optional
• 1 pound lean ground turkey breast, (see Ingredient note)
• 1 large egg, lightly beaten
• 3 tablespoons chopped fresh dill
• 1½ tablespoons coarse-grained mustard
• ½ teaspoon salt
• ¼ teaspoon freshly ground pepper
• 6 whole-wheat buns, (optional)
• Lettuce leaves & tomato slices, for garnish

1. Place bread in a food processor and pulse into fine crumbs. Transfer to a large bowl. Pulse mushrooms in the food processor until finely chopped.
2. Heat 2 teaspoons oil in a large nonstick skillet over medium-high heat. Add onion, garlic and the mushrooms; cook, stirring occasionally, until tender and liquid has evaporated, about 10 minutes. Add to the breadcrumbs and let cool completely, 15 to 20 minutes.
3. Meanwhile, prepare Scallion-Lemon Mayonnaise, if using.
4. Preheat grill to medium-high.
5. Add ground turkey, egg, dill, mustard, salt and pepper to the mushroom mixture; mix well with a potato masher. With dampened hands, form the mixture into six ½-inch-thick patties, using about ½ cup for each.
6. Oil the grill rack. Brush the patties with the remaining 1 teaspoon oil. Grill until no longer pink in the center, about 5 minutes per side. (An instant-read thermometer inserted in the center should register 165°F.) Meanwhile, split buns and toast on the grill for 30 to 60 seconds, if using. Serve burgers on buns, garnished with lettuce, tomato and Scallion-Lemon Mayonnaise, if desired.

Tips & Notes

• Make Ahead Tip: Prepare through Step 5. Wrap individually and refrigerate for up to 8 hours or freeze for up to 3 months. Thaw in the refrigerator before cooking.

• Ingredient Note: Lean ground turkey breast has 110 calories and 1 gram fat per 3-ounce serving, compared to 193 calories and 11 grams fat in regular ground turkey (which may include leg meat and skin).