Preheat your oven to 350.
Cut your rib racks into 2-3 bone chunks. Drizzle Extra Virgin Olive Oil on them, and use your hand to make sure they are all coated evenly.
Season the ribs liberally with salt (I like coarse Kosher the best) and black pepper. Then dust them with garlic powder and onion powder. Lastly, cover them in rosemary.
Give the ribs a little rub to ensure that the spices stick. Then flip them over and do the same thing to the other side.
Place the seasoned ribs on a foil-lined baking sheet (you will need 2 if you use 2 racks of ribs) and place them in the oven.
Let the ribs cook for 1.5-2 hours, turning them every 20-30 minutes. Once they turn a nice dark golden brown color, they are done! It is OK if the bone tips turn black, just be sure that the skin of the ribs doesn’t get too black.
Take them out of the oven and enjoy!