We are able to recommend these excellent Tuscan cooking teachers:
Elisa Berghi specialises in pasta and antipaste: Elisa for cooking classes in Tuscany.
Jacopo and Anna who cover the entire range of Tuscan cuisine: Tuscan cooking lessons with "Let's Cook".
Both Elisa and also Jacopo and Anna will also cater a dinner at your own accommodations in Tuscany. All you need is a well-equipped kitchen. They will do the rest.