Roasted Cauliflower without raisins couscous

1 head cauliflower , cut into small pieces 3 garlic cloves , crushed 1 yellow onion , chopped 1 yukon gold potato , peeled and 1/4 diced 2 tablespoons olive[...]

1 large cauliflower head , leaves removed and cored 3 sprigs fresh sage , divided 1 small onion , diced 1 head of garlic , sliced in half horizontally (skin[...]