The last few days of spring might be a little chilly but April 12 marks National Grilled Cheese Day with many ways to warm your heart.

From pizza and mac and cheese, to fried chicken and breakfast foods, a national survey tries to find the secret to the perfect sandwich.

Four of five Americans agree grilled cheese is a top comfort food choice according to a survey of more than 2,000 people by Sara Lee Artesano Bread.

The most popular comfort foods constitute an even 50/50 split between savory and sweet according to the survey. But whatever your choice, cheese or chocolate, two-thirds say its the key to keeping calm.

Greg Wagner at the Ultimate Melt, a grilled cheese specialty food truck, said the perfect sandwich is all about the balance and variety of flavors. While the traditional Cheddar and Jack is the most popular, the truck offers nine different kinds of grilled cheese sandwiches and lets you get creative for your perfect lunch.

The majority of viewers on the KING 5 poll say they like their grilled cheese with tomato soup.

Today is the day to get creative with all your favorite comfort food mashups. Stay with the traditional, mix some olive oil and spices, or even get fancy with other ingredients. There are no rules for your grilled cheese, but maybe you can take inspiration from a few of our fanciful findings.

Cooking for keeps' Pizza Margherita Grilled Cheese is an innovative take on the traditional Italian pizza. Take this recipe and add your favorite cheese blends or even some spices.

Get a little spicy with this modern southwest twist; Naturally Ella's Avocado, Mozzarella, and Jalapeno Chimichurri Grilled Cheese.

For the meat lovers, the Big Popper Hot Buffalo Chicken and Bacon Grilled Cheese from Half Baked Harvest might be your next favorite comfort food mashup.

Combine those savory and sweet flavors with the Apple and Fontina Grilled Cheese from Bon Appetite.

For a twist on classic breakfast food, try the Breakfast grilled Cheese from Barefeet in the Kitchen.

Each state has their own take on the cheesy delight based on the culture there. For more inspiration see our guide to 50 grilled cheese sandwiches in 50 states.