Melt in Mouth Caramel

1 c. butter
1 lb. brown sugar
pinch of salt
1 c. light Karo
1 can sweetened condensed milk
1 t. vanilla
Melt butter in heavy saucepan; add brown sugar and salt. Mix well; add Karo and milk and mix well. Blend and bring to boil. Stir constantly to 240 degrees, remove from heat.
Add vanilla. Pour onto buttered 13 x 9 pan. Cool. Cut into pieces and wrap in waxed paper

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