|Place of origin||Columbus, Ohio, United States|
|Region or state||Midwestern United States|
|Creator||Marzetti’s Restaurant, Columbus, Ohio|
|Main ingredients||Macaroni, ground beef, tomato sauce.|
|Cookbook: Johnny Marzetti Media: Johnny Marzetti|
The dish originated in Columbus, Ohio at Marzetti's, an Italian restaurant established in 1896 at Woodruff Avenue and High Street by an Italian immigrant named Teresa Marzetti. One of the dishes Marzetti offered her customers was a baked casserole of ground beef, cheddar cheese, tomato sauce, and noodles that she named for her brother-in-law, Johnny. Teresa Marzetti was the first person to serve the casserole Johnny Marzetti in a restaurant. Proximity to the nearby Ohio State University helped the first restaurant succeed and spread Marzetti's fame. By the 1920s, it had become popular across Ohio and the Midwest. The original restaurant closed in 1942, but a second location, opened in 1919, remained in operation until Teresa Marzetti died in 1972. Marzetti's later became known for various salad dressings, which are still produced under the T. Marzetti Company label.
- Edward Pfau (April 4, 2013), Casserole indeed started in Columbus, The Columbus Dispatch, p. 18A, retrieved October 20, 2013
- Charlotte Durham (September 30, 2009), Origin of Johnny Marzetti pasta casserole legendary, The Commercial Appeal, p. M4, retrieved October 20, 2013
- "Johnny Marzetti - Ohio History Central". Retrieved 23 September 2014.
- "T. Marzetti Company - Ohio History Central". Retrieved 23 September 2014.
- "Teresa Marzetti - Ohio History Central". Retrieved 23 September 2014.