312 calories; 14 g fat; 4 g saturated fat; 49 mg cholesterol; 271 mg sodium; 25 g carbohydrate; 1.6 g fiber; 4.7 g sugar; 22 g protein
Preheat grill to medium-high heat. Finely dice mushrooms or gently pulse in food processor. In skillet, warm 1 tablespoon olive oil on medium-high heat and add mushrooms, cooking 5–7 minutes or until golden brown. Remove from heat and cool 5 minutes. Transfer cooled mushrooms to medium bowl. Add ground beef and salt, mixing until combined. Make 4 patties. Grill 13–15 minutes, or until internal temperature reaches 160°F, flipping halfway through.