Sports bars and other varied-menu casual-dining concepts are big on shareable snacks, such as nachos, cheese fries, chips with dip, garlic knots and other group eats. These foods can often be mixed and matched on a sampler plate or in a to-go box to add variety to the snacking experience. But shareables are also growing on the sweet side: Dessert pizzas and bags of mini donuts and cookies are trending as shareable sweets.