1 (4 pound) bone-in prime rib roast (room temperature)
¼ cup unsalted butter, softened
1 tablespoon freshly ground black pepper
1 teaspoon herbes de Provence
kosher salt to taste
Combine butter, pepper, and herbes de Provence in a bowl; mix until well blended. Spread butter mixture evenly over entire roast. Season roast generously with kosher salt.