1. Grease 9x9 glass baking dish and preheat oven to 350 degrees.
2. Mix together butter, eggs, vanilla, and sugar. Do not beat or over stir.
3. Add flour and salt and mix until just incorporated.
4. Spread in baking dish.
5. Pour chocolate chips on top and swirl with a knife gently until they are mixed into batter.
6. Bake for 35 minutes or until a toothpick comes out clean when inserted.
7. Mix together ingredients for icing and spread on top if desired!
8. ENJOY!!