
Combine the topping ingredients in a small bowl, then spread 2 tablespoons topping onto each pudding. Chill until ready to serve. Serve with gingersnaps or graham crackers.
From Smitten Kitchen.
You can use ramekins of a different size, but be prepared to change the baking time.
You can bake the sour cream topping for a few minutes, but I think it's creamier and tastier when left unbaked.