Toast the nuts in a dry skillet over a medium-high heat until golden and fragrant, about 3 minutes. Chop them coarsely then set aside. In a medium bowl, stir together the yogurt, milk, honey, oats, and vanilla. Divide the oat mixture evenly among 4 small dishes or parfait glasses. Top each with a half cup of berries, then 2 tablespoons of nuts. Cover tightly and refrigerate overnight.