Pawtucket Squares

1/2 c. shortening
2 squares baking chocolate
3/4 c. flour, sifted with: 1/2 tsp. salt and 1 tsp. baking powder
1 c. sugar
3 eggs
1 tsp. vanilla

Melt shortening and chocolate in a saucepan over direct heat. Remove from fire and stir in the sugar. Add eggs, stirring in one at a time, then flour mixture and, lastly, the vanilla. When well mixed, put into greased 9x9 inch pan and bake at 350 degrees about 25 to 30 minutes.