This sounds delicious - I have heard of people doing this, but had forgotten about it. I did find a few recipes, but not sure which one might be closer to what you are looking for when it comes to flavor. I am not sure if I can find any for the crockpot, though.
BBQ Gravy Recipe #1
3 tablespoons butter
3 tablespoons flour
2 cups chicken stock
1/4 cup barbeque sauce
Salt and freshly ground black pepper
Heat a saucepan over medium-high heat. Melt the butter then stir in the flour and cook until light brown, about 1 minute.
Whisk in the chicken stock and barbeque sauce, and season with salt and freshly ground pepper. Continue whisking and cook until thickened, about 3 minutes.
Source: Rachel Ray
BBQ Gravy Recipe #2 (Red Eye Gravy Recipe)
1 tablespoon butter
4 slices bacon (finely chopped)
1/2 medium onion (finely chopped)
2 garlic cloves (minced)
3/4 cup strong black brewed coffee or 3/4 cup espresso
3/4 cup ketchup
1/4 cup Worcestershire sauce
2 tablespoons Dijon mustard
2 tablespoons molasses
2 tablespoons dark brown sugar
coarse salt, to taste
fresh ground black pepper, to taste
Melt butter in heavy saucepot over medium heat.
Add the bacon, onion and garlic and cook until lightly browned, about 3 minutes.
Stir in the coffee, ketchup, Worcestershire sauce, mustard, molasses and brown sugar and allow the mixture to gradually come to a boil.
Reduce heat slightly, and allow the sauce to simmer until thick and richly flavored, about 10 to 15 minutes, whisking from time to time.
Source: Yummly
