1 (15 oz.) can sweetened condensed milk
2 sq. unsweetened chocolate
2 c. raisins (if desired)
1 c. butter
1 1/3 c. brown sugar
1 1/2 tsp. vanilla
2 c. flour
3/4 tsp. salt
1/2 tsp. baking soda
2 1/2 c. oats

Combine milk and chocolate; heat until chocolate melts. Remove from heat and stir in raisins; cool. Beat butter, sugar and vanilla. Combine flour, salt, soda and oats. Add to creamed mixture until crumbly. Pack 1/2 in 13x9 pan. Cover with the raisin filling. Sprinkle with remaining mixture. Bake at 375 degrees. Cool and cut into bars.