Crumb Topping - cooking recipe

Ingredients

1 c. sugar
2 drops vanilla
1 stick butter, softened
1 c. flour

Preparation

With a fork, mix first 3 items.
Add flour and use hand to crumble.
Put on coffee cake (13 x 9-inch) pan and bake for 35 minutes at 350\u00b0.
This recipe is over 100 years old.