I wouldn't recommend only using bone broth, because some bone broths can be very strongly flavored. But if you want to know one of my secret health tricks, it's that I almost always sub in a little bone broth in my sauces and soups. Bone broth is extremely healthy and I like to get a little bit in where I can! So for this recipe, I would sub in up to 1/4 cup of chicken bone broth to get some of those extra health benefits of bone broth for your keto diet.