Midge'S Pudding Sauce(Hard Sauce) - cooking recipe

Ingredients

1/2 c. butter
1/2 c. brown sugar
1/2 c. granulated sugar
1 egg, separated
1 tsp. vanilla
3 Tbsp. boiling water

Preparation

Cream butter, brown sugar and granulated sugar until smooth. Add egg yolk (unbeaten) and beat mixture well together.
Then add vanilla and 3 tablespoons boiling water, one at a time, beating well as each is added.
Fold in beaten egg white and set aside to harden.