Turning a beloved hobby into a thriving business is always a leap of faith. But how many entrepreneurs can say they took that leap at the tender age of 13 years?

Maddie Reasner, founder of Thirteen Bakery, grew up in the food business. So when she spent countless hours perfecting her chocolate chip cookie recipe–at an age when most kids are struggling to master algebra– her family didn’t bat an eye. When she launched her own Virb site and held successful bake sales to benefit schools, though, people started to take notice.

In the latest (mt) Client Showcase, Maddie and her family talk about her passion for baking and her mission to make the world a better place.