Here's a delicious and energy boosting drink I made for my little footballer. He likes milk. He loves bananas. He loves loves loves Nutella. The only thing he doesn't really like is oats.
I am not too fond of it myself, so maybe I haven't even really tried giving it to him. I don't like having oats and milk, though I powder the oats and use it making bread, dosas, idlis, muffins,...anything other than having it as is.

After all the running and sweating it out in his football sessions, I like to give him something he likes, something that's healthy and something nutritious enough. A cold glass of smoothie with bananas, milk, oats and Nutella sounded perfect
I had never used oats in a drink earlier and wasn't sure how it would really turn out. I just used a tablespoon of it here and the smoothie was over really fast, so I may add a little more next time.
Adding oats does make it thicker and changes the texture of the drink, so don't really add too much. A tablespoon or slightly more per glass should work just fine.
Nutella banana oat smoothie
What you need -
1 tbsp oats powdered (I used Quakers quick cooking oats)
3/4 cup cold milk
1 banana
2 tsp Nutella
5-6 ice cubes
1 tsp sugar (add more if required)
What you do with it -
Peel and chop the bananas
Add all the ingredients and run it thru the blender for 2-3 mins
Take a little Nutella and smear it in the inside of the glass and then pour the smoothie into it
Top it with a few chocolate chips if you'd like