Substitute for sugar/golden syrup as binding agent in breakfast bars for kids
The syrup and the oats appear to be the binding agents in your recipe. If you don't plan on omitting the golden syrup no substitution is necessary. If you want to do away with the golden syrup, coconut oil is commonly used in vegan protein bar recipes as the binder. Another way would be to add some "sticky fruits" (like dried dates or raisins)