Add all ingredients in a bowl and mix well. The dough should be stiff and not sticky at all. If it's sticky add more flour. Knead a few times to create a workable dough. Roll out dough, the thickness is up to you depending on what time of treat you want to make. Thinner makes crunchier bones, thicker will make softer ones. Cut with cookie cutter or pizza cutter or knife and place on parchment paper/foil/ silicone baking mat. Bake at 350 until slightly browned around edges. Takes around 20-25min for mine. Store in air tight bag. They will be good for about a week at room temp but I store mine in the freezer as it then slows my dogs down (a little) when woofing them down!