Onion slices seasoned with a premium all-purpose rub and charred on the grill make a subtly smoky topper for burgers or a quick and easy side.

Grilled Onion Slices

Preheat a charcoal or gas grill for direct grilling over medium-high heat (375 degrees).

Peel and cut onions each into 6 slices, about 1/2-inch thick. Thread slices onto metal skewers.

Brush 1/4 cup melted butter over both sides of onion slices; season to taste with all-purpose rub. Grill 8 to 10 minutes, turning halfway through. Remove slices from skewers and serve with additional butter. Garnish with sliced basil, if desired.