You can put a lot of toppings of your choice.

Usually it is 3 or 4 layers:
1. a little sauce or cheese: pesto, marinara, any spreadable cheese or any other sauce you like as long as it is not too runny. 
2. a little protein. Seriously, any protein: sausage, roasted chicken, smoked salmon, sardin, and list goes on and on.
3. a little veggies or fruits. Again, any veggies or fruits will do as long as they do have a lot of juice: roasted vegetables, sliced fruits, mushrooms, ...
4. a little garnish, such as chopped herbs, roasted garlic, parmigiana shavings, ...
You just need to pick up things from each category to go with each other and make your unique combination. Just search for "crostini recipes" and get some more inspirations. I found a couple for your reference:  

http://www.realsimple.com/food-recipes/recipe-collections-favorites/recipe-ideas-crostini-00000000047873/index.html

http://www.saveur.com/gallery/Crostini-Recipes

Let's get inspired together. Have fun making them for your son!

所有跟帖： 

• sorry, veggies and fruits should NOT have a lot of juice -DillChen- ♀ (0 bytes) () 12/11/2013 postreply 13:44:25