Step 1:Preheat oven to 170 °C (150 °C for Fan Assisted Oven)Step 2:Dissolve the stock cube of your choice in hot water.Step 3:Add remaining ingredientsStep 4:Knead dough until it forms a ball (approximately 3 minutes)Step 5:Roll dough until 1 cm thick.Step 6:Cut into slices or bone shapes (you can purchase a bone shaped cookie cutter to make shapes with)Step 7:Place dough pieces on baking paperStep 8:Bake for 20 -25 minutes (or until golden brown)Step 9:To make the optional Peanut Butter frosting, warm up the Peanut Butter in the microwave until it is smooth and easy to stir.Step 10:Add the water to the Peanut Butter and mix together before adding in the flour and stirring well. Step 11:Spread over the dog biscuits and allow to set. If the mixture hardens before you have finished you can always warm again in the microwave. Step 12:These biscuits can be stored & refrigerated in an airtight container for 2 months or alternatively kept frozen for up to 6 months