Blueberry Muffins with Crunchy top

I had so many blueberries in my fridge that we weren't eating fast enough so I made these puppies one morning and boy were they scrumptious!! Here is the recipe:

Oh my gosh I can't find the recipe, but I will find it in my history and add it in here so I can have the recipe for my records, because I don't want to let this one go.