Preheat oven to 400.
Separate asparagus into 12 bundles.
Wrap 1 piece of bacon around each bundle and secure with a toothpick.
Place bundles in a casserole dish.
In a small pot, combine butter, brown sugar, soy sauce, garlic salt and pepper. Bring to a boil and then pour over the asparagus bundles.
Cook for 20-25 minutes.