Heat the olive oil in a small saucepan. Add the couscous and saute for a minute or two to coat. Add the garlic and saute a few seconds, then add the broth, spice of choice cook for 2 minutes until the liquid appears absorbed. Remove from heat, fluff up with two forks, stir in the butter. Leave to steam, covered, 10 minutes, then season with salt and pepper. Or transfer to an ovenproof dish and finish steaming in a 375 oven for 5 to 10 minutes.