In a small bowl, dissolve the sugar in the warm water.
Add in the yeast and allow the yeast to foam in the water. Set aside.
In a larger bowl, add flour and salt. Stir with a fork to mix.
Combine the water/yeast mixture into the flour. Mix well with a fork.
Using a towel or saran wrap, cover the bread dough and set aside in a warm place to rise. Allow to rise for 1.5 hours until it doubles in size.
Remove the towel or saran wrap . Using your hand, lightly mix the dough down to the original size. This does not take much and the mixture is sticky.
Cover the bowl again and allow it to rise to double in size again.
Take a piece of foil and place it in the bottom of the crock-pot shiny side up. Remember you want enough foil to be able to pull the bread out.
Using a spatula, spoon or your fingers, rub the butter into the side of the crock-pot coating the foil nicely. Use the entire 2 tablespoons. (this will bake into the side of the bread giving the crust a crisp butter crust)
Add the bread dough to the crock-pot.
Cook on high for 1 hour. (lid on)
After the 1 hour mark, add a paper towel to the top of the crock-pot and then place the lid on top of the paper towel.
Cook for an additional 45 minutes to 1 hour.
Remove the bread from the crock-pot and then remove the foil.