Oven Roasted Chicken with Lemon Rosemary Garlic Butter

4-5 pound chicken, at room temperature giblets and neck removed from cavity

onions, quartered

head of garlic, cut in half plus 3 garlic cloves minced

lemons, 2 cut in half and remaining half sliced into thin slices

unsalted butter, softened

grated lemon zest

fresh rosemary sprigs plus 1 sprig minced

Kosher salt and freshly ground pepper

white wine