1 tsp. kosher salt
1/2 tsp. freshly ground black pepper
1/2 tsp. dry mustard
1/2 tsp. chili powder
1 lb. freshly ground buffalo meat
Chipotle Mayonnaise:
1/4 C. mayonnaise, regular or reduced-fat
1/2 tsp., or to taste, minced canned chipotle chile peppers in adobo sauce

1 yellow onion, cut into four 1/3-inch-thick slices
Extra-virgin olive oil
4 hamburger buns

To make burgers: In a small bowl, combine salt, pepper, dry mustard and chili powder. Sprinkle over the buffalo meat and gently distribute the spices throughout with your fingers. Gently shape the meat into 4 patties, each about 3/4 inch thick. To make chipotle mayonnaise: In a small bowl, combine the mayonnaise and minced chiles in adobo sauce, to taste. Or, add 1 can chipotle chiles in adobo sauce to the bowl of a food processor and pulse until chiles are ground. Measure out the amount to taste and store the remainder in the refrigerator for other uses. Prepare grill for medium heat. Lightly brush or spray the onion slices on both sides with the olive oil. Grill onion slices until tender and well-marked, about 8 minutes, turning once halfway through grilling time. Grill the buffalo patties over medium heat until a thermometer, inserted from the side, reaches 160 degrees for medium, about 7 to 9 minutes, turning once halfway through grilling time. Spread the inside of the hamburger buns with the chipotle mayonnaise. Place the buffalo patties on the buns and top with the grilled onions. Serve immediately.

Yield: 4 servings
Calories: 368
Fat: 16.7g
Fiber: 1.8g