As long as your cranberry sauce is firm and doesn't have too many spicy ingredients, your favorite recipe should work. (My cranberry chutney with curry might not do for dessert, so here I used a cranberry-apple compote.) Same goes for the granola--use your own recipe, or a good store-bought one will do fine.
Into wide-mouth parfait glasses, scoop 1/2 cup yogurt (or ice cream). Top with 1/4 cup cranberry sauce and a few tablespoons of granola. Repeat for a second layer. (Or make just one layer, with double the ingredients.)