A favorite in both Belgium (especially the area of Flanders) and France are meatballs (boulettes)with tomato sauce. 

Belgian meatball recipe
French meatball recipe

French Bouillabaisse recipe

BELGIAN FISH STEW

What is Quiche"  There are many recipes but they all have one thing in common - the crust. 

French Quiche Lorraine Recipe

Flanders Quiche with Spinach, Turkey and Onions
What is a praline"/?pr??l?n/Learn to pronouncenouna smooth, sweet substance made by boiling nuts in sugar and grinding the mixture, used especially as a filling for chocolates."white chocolate and praline cheesecake"a crisp or semicrisp candy typically consisting of butter, brown sugar, and pecans.
Both the Belgians and the French make pralines but they are different. See Recipe links. The Bruges? swan, or het brugsch swaentje in Belgian, is a variety of Belgian chocolate praline that has been made since 2006.  The pralines in Belgium are made with chocolate. Belgium is rich in chocolate history. 
LINK to Belgian Chocolate Praline Recipe
LINK to French Praline Recipe  
Pralines are also very popular in Louisiana.  Brought over to the US from France.
LINK to INFO on Belgian Het Brugsch Swaentje or Belgium Praline in Flanders, Belguim - Couldn't find exact recipe 

Kebabs aka Kabobs are popular in Belgium and France
French Toast Kabobs

French Chicken Kabobs

FLANDERS, Belgian honey-glazed chicken-kabobs

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