Preheat oven to 350 degrees.
Combine the first five ingredients in a large bowl or mixer until fully incorporated.
Combine flour, cinnamon, salt and baking soda in a medium bowl and mix together with a whisk.
Add flour mixture to pumpkin mixture stirring just until mixed and moist.
Fold in chocolate chips.
Pour into 2 8x4 loaf pans, or 12 cup muffin pan sprayed with non-stick spray.
Bake for 1 hour and 15 minutes or until a wooden skewer comes clean.
If you use small loaf pans or muffin pans you will need to decrease your cooking time to 45 minutes.
Start to melt butter in a small saucepan over medium heat.
Add brown sugar and milk and stir constantly bringing to a boil over medium heat.
Stir constantly for 1 minute.
Remove from heat, add vanilla and stir constantly for 2 more minutes.
Pour or brush on bread, muffins, or cakes