April 12 is National Grilled Cheese Sandwich Day! The origin of the day isn't fully clear but it's a Friday and Grilled Cheese Day so we're in!

The popularity of the modern grilled cheese sandwich seemed to have started in the 1910's and 1920's and were originally called "Toasted Cheese Sandwiches," according to TripSavvy.  But it was really those easily accessible processed cheese slices from Kraft that changed the game.

During World War II, Navy cooks would make cheese sandwiches that were open faced with grated cheese, according to How Stuff Works. The grilled cheese game changed in 1949 with the introduction of Kraft Singles.

Some of the top spots for grilled cheese in Connecticut include:

• Melt Mobile in Stamford
• The Whey Stationary in Middletown
• The Cheese Truck 
• Toasted in downtown Hartford