Butterscotch Pie - cooking recipe

Ingredients

1 c. brown sugar, packed
4 Tbsp. plain flour
3 egg yolks, beaten
2 c. milk
1 tsp. vanilla
1 tsp. butter

Preparation

Cook the first four ingredients until thick.
Set off the stove.
Add the vanilla and butter.
Pour into baked pie shell. Serve when completely cool.