This Grilled Balsamic Blueberry and Cheese Panini is seriously so good! I know that it may sound like a totally weird combination, but trust me on this one! The salty balsamic vinegar and sweet blueberries are basically a match made in food heaven. Plus, cheese belongs in basically everything right!? ;) Then when you roll the whole thing together and crisp it in a panini pan, you have one of my new favorite sandwiches! This recipe can be made in just a few minutes and is great for an easy lunch or paired with soup for a bigger dinner.