DS (5) has started stealing food and hiding it. It's usually ingredients, stuff like sugar, marzipan, sugarpaste (I make a lot of cakes) etc. I've found stuff hidden in his room, under his bed, in the dining room and it's driving me nuts. He very nearly didn't get his birthday cake as he kept taking the sugar paste I needed for it.
I have tried everything, but nothing seems to work. He gets fed well and regularly and it doesn't seem to do it out of hunger. He sometimes takes water and mixes stuff up in bowls. It's a complete nightmare and I don't know what to do about it. Is this a sign of something more serious? It's not normal behaviour is it? He got up at 4am once and did it!
Also, we do lots of stuff together and as a family and I let him bake and cook with me daily.
All advice welcome.