1. Preheat oven to 375°.
2. Beat butter, sugar, vanilla & salt.
3. Gradually add flour and continue mixing.
4. Stir in 1 1/2 cups chocolate morsels.
5. Press into ungreased 9 x 13 pan.
6. Bake at 375° for 20-22 minutes until golden on edges.
7. Cool in pan until slightly warm.
8. For topping:.
9. Microwave 1/2 cup of chips in a ziploc bag for 1 minute on HIGH. Watch carefully.
10. Knead the bag around until the morsels are melted and smooth.
11. Cut a tip in the corner of the bag and drizzle chocolate onto the bars.