National Deep Dish Pizza Day
April 5
About National Deep Dish Pizza Day
National Deep Dish Pizza Day is celebrated on 5 April each year in the United States, paying tribute to one of the most iconic and indulgent pizza styles ever created. Born in Chicago in the 1940s, deep dish pizza features a thick, buttery crust pressed into a deep pan, layered with mozzarella cheese, hearty toppings, and a chunky tomato sauce on top. This annual celebration invites pizza lovers to savour the rich, satisfying flavours of this uniquely American culinary creation.
How to Celebrate National Deep Dish Pizza Day
Whether you are a lifelong deep dish devotee or trying it for the first time, here are some ways to enjoy the day:
- Order from a pizzeria – Seek out a restaurant that serves authentic deep dish pizza. Many pizzerias offer special deals on 5 April to mark the occasion. If you are lucky enough to live in Chicago, visit one of the legendary spots like Pizzeria Uno, Lou Malnati’s, or Giordano’s.
- Make your own at home – Deep dish pizza is surprisingly achievable in a home kitchen. Use a cast-iron skillet or deep cake tin, press buttery dough into the base, and layer cheese first, then toppings, then sauce on top.
- Host a pizza party – Invite friends over for a deep dish night. Set up a DIY topping bar and let everyone customise their own mini deep dish pizzas.
- Try a new variation – Experiment with different fillings such as spinach and artichoke, Italian sausage and peppers, or a four-cheese blend. Deep dish is endlessly adaptable.
- Compare regional styles – Taste-test Chicago deep dish alongside Detroit-style (rectangular, with a thick, airy crust and cheese to the edges) or stuffed pizza (a double-crust variant) to appreciate the range of thick-crust styles.
- Learn the history – Read up on the origins of deep dish pizza and the rivalry between Pizzeria Uno and Pizzeria Due. Share the story with your dinner companions.
- Support a local pizzeria – Order from an independent pizza shop rather than a chain. Small businesses often put the most care into their craft.
- Share your pizza on social media – Snap a photo of your deep dish creation and post it using the hashtags below. Pizza photos are always a crowd-pleaser.
What is National Deep Dish Pizza Day?
National Deep Dish Pizza Day is an annual food celebration dedicated to the thick-crusted, pan-baked pizza style that originated in Chicago. Unlike traditional thin-crust pizza, deep dish is baked in a round, high-sided pan that gives it a pie-like structure. The crust is pressed up the sides, creating a deep well that holds generous amounts of cheese, toppings, and sauce. The distinctive feature of deep dish is its inverted layering: cheese goes directly on the dough, followed by toppings, with chunky tomato sauce spread across the top to prevent the cheese from burning during the longer baking time.
When is National Deep Dish Pizza Day?
National Deep Dish Pizza Day falls on 5 April every year. In 2026, that is a Sunday. The date is fixed and does not change. If you also enjoy celebrating pizza, you might want to mark National Pizza Party Day on 15 May as well.
The History of National Deep Dish Pizza Day
The story of deep dish pizza begins in 1943 at Pizzeria Uno in Chicago, Illinois. Ike Sewell, a Texas-born businessman, and his partner Ric Riccardo opened the restaurant on the corner of Ohio Street and Wabash Avenue. Their goal was to create a heartier, more substantial pizza that could serve as a full meal rather than a snack. The result was a thick, dough-lined pan filled with cheese and toppings and baked for a longer time than traditional pizza.
The creation was an immediate hit with Chicagoans, and Sewell opened a second location, Pizzeria Due, just a block away in 1955. Over the following decades, deep dish became synonymous with Chicago itself. Competitors like Giordano’s (founded in 1974) and Lou Malnati’s (founded in 1971) developed their own interpretations, with Giordano’s specialising in “stuffed” deep dish featuring a second layer of dough on top. The rivalry between these establishments has become part of Chicago’s cultural identity.
The formal recognition of 5 April as National Deep Dish Pizza Day emerged through the food day calendar movement in the United States. While no single organisation claims its founding, the day has been widely embraced by pizza lovers, food media, and the restaurant industry. It serves as both a celebration of culinary innovation and a tribute to Chicago’s lasting contribution to American food culture.
Fun Facts About Deep Dish Pizza
- A single slice of deep dish pizza typically contains between 400 and 600 calories, owing to its generous layers of cheese and thick crust.
- Pizzeria Uno, where deep dish was invented in 1943, is still open at its original location at 29 East Ohio Street, Chicago.
- Chicago deep dish typically takes 30 to 45 minutes to bake, compared to 10 to 15 minutes for a thin-crust pizza.
- The cheese goes underneath the sauce in deep dish to prevent it from burning during the extended baking time.
- Lou Malnati’s ships frozen deep dish pizzas nationwide, making it possible to enjoy authentic Chicago-style pizza anywhere in the country.
- The ongoing debate between Chicago deep dish and New York thin-crust pizza is one of America’s most enduring food rivalries.
Why National Deep Dish Pizza Day Matters
Deep dish pizza represents culinary creativity and regional pride. It is a reminder that food traditions are shaped by the people and places that create them. The day celebrates the ingenuity of restaurateurs who dared to reimagine a familiar dish and the communities that embraced their creation. It also supports local restaurants and pizzerias, encouraging people to explore their local food scene and try something beyond the ordinary.
Frequently Asked Questions
What is National Deep Dish Pizza Day?
National Deep Dish Pizza Day, celebrated on 5 April, is an annual food holiday honouring the thick-crusted, pan-baked pizza style that was invented in Chicago in 1943.
When is National Deep Dish Pizza Day in 2026?
National Deep Dish Pizza Day falls on Sunday, 5 April 2026.
Who invented deep dish pizza?
Deep dish pizza was created by Ike Sewell and Ric Riccardo at Pizzeria Uno in Chicago, Illinois, in 1943. Some accounts credit Rudy Malnati, a cook at the restaurant, with developing the original recipe.
Spread the Word
Join the celebration and share your deep dish pizza photos on social media with #NationalDeepDishPizzaDay and #DeepDishPizzaDay2026. Tag your favourite pizzeria and challenge your friends to bake their own at home.
Related Awareness Days
- National Pizza Party Day – Celebrated on 15 May, this day is dedicated to sharing pizza with friends, family, and colleagues.
- National Cheese Day – Observed on 4 June, this day celebrates one of deep dish pizza’s most essential ingredients.
- Eat What You Want Day – Held on 11 May, this is the perfect excuse to indulge in your favourite foods without guilt.
Links
Plan your next campaign
Use Awareness Planner to discover events, build content calendars, and stay ahead of key dates.
2026 Awareness Days Wall Planner
Every key awareness day at a glance. Perfect for offices, staff rooms, and team planning.
View Calendar →
