Scarlett Johansson buys kids' meals when she eats out - because she likes to get a toy.

The 'Iron Man 2' actress loves to occasionally treat herself to junk food and if she goes for a burger she makes sure she gets a toy with her meal.

She said: "I love pizza with anything except pineapple or anchovies on the top.

"I do like Burger King cheeseburger meals as well because I like the chargrilled taste, and I like the toy that comes with it."

Although Scarlett enjoys fast food, she generally eats very healthily and even has her own healthy low calorie cookie recipe.

The 25-year-old star - who is married to actor Ryan Reynolds - said: "I am big on baking, but I bake very healthily these days. I make a protein cookie where I substitute all the fatty ingredients with healthy ones, such as coconut oil and egg whites. I may add carib chips instead of chocolate chips. If I have one of those during the day I don't feel so guilty!"