BROWN SUGAR FUDGE

4 cups brown sugar
1 cup white sugar
1/2 cup margarine
1/4 cup flour

1 cup evaporated milk
1 tsp vanilla

Combine all ingredients in a saucepan and bring to a boil over medium heat stirring constantly. Boil for 3 minutes.

Remove from heat and beat with mixer until thick like icing.

Spread in lightly buttered and floured pan.