M&M's vs. Reese's

M&M's is a Mars brand, while Reese's is owned by The Hershey Company. Their corporate ownership is different even though both are major American candy brands. [Mars history](https://www.mars.com/about/history) [Hershey history](https://www.thehersheycompany.com/content/hershey-chocolate-world/en-us/home/blog/reeses-brand.html)

M&M's are candy-coated chocolate pieces with a hard outer shell, while a classic Reese's Peanut Butter Cup contains a peanut butter center surrounded by chocolate. The two products therefore compete as snacks but have very different textures and shapes. [M&M's history](https://www.mms.com/en-at/explore/about-us) [Hershey history](https://www.thehersheycompany.com/content/hershey-chocolate-world/en-us/home/blog/reeses-brand.html)

M&M's Plain Chocolate Candies were introduced in the United States in 1941. H.B. Reese created Reese's Peanut Butter Cups in 1928, before the Reese company later became part of Hershey. [M&M's history](https://www.mms.com/en-at/explore/about-us) [Hershey history](https://www.thehersheycompany.com/content/hershey-chocolate-world/en-us/home/blog/reeses-brand.html)

Yes, M&M's Peanut Butter Chocolate Candies were introduced in the United States in 1989. They overlap with Reese's flavor territory, but the M&M's version keeps the candy-coated shell and piece format. [M&M's history](https://www.mms.com/en-at/explore/about-us)