
Mix the rub. Combine the salt, pepper, garlic powder, onion powder, smoked paprika, rosemary, and thyme in a small bowl, then mix until you have an even mixture. I recommend using a whisk or fork so you can break up any clumps. You can use a spice grinder if you prefer a finer blend. I like a more textured rub for prime rib, but feel free to make it how you love.
Use immediately or save for later. Your Prime Rib Rub is ready to use right away for prime rib on the smoker, the grill, or even in the oven. Store any unused rub in an airtight container for up to 3 months for the most freshness.