One you've formed your beefy buckwheat biscuits and placed them on a cookie or baking sheet, all that is left is to bake them at 375 degrees (190 levels Celsius) for about 30 minutes. This is a tip for making your biscuits (and nearly any oven-baked doggie snack) onerous and crunchy instead of smooth and chewy: Once they're finished baking, allow them to cool for just a few hours in the turned-off oven.