In a mortar in pestle*, add the garlic, olive, oil, nutritional yeast, and a just a pinch of salt and pepper and mash until you are left with a smooth paste. Spread the mash evenly over both sides of bread slices, coating every square inch of each side. Bring a skillet to medium heat and grill the bread on each side for 3-4 minutes, until golden brown, checking often to make sure not to burn. Once removed from the skillet, spread a paper thin amount of the miso on only the top of each piece of toast.