Not per se but being France you will need to register your business under which ever business regime applies to you eg auto entrepreneur you will probably have to do a course about French business and a hygiene certificate, you will probably need your premises inspected and I doubt your kitchen would be suitable.You will need insurance just in case someone with a walnut allergy eats your coffee and walnut cake and then of course you will need to pay tax health and pension contributions etc which are based on your business income not your profit.And finally if you have an S1 for health care this is nullified if you set up a business or start paid employment.
Best of luck and do not let me put you off.
The other big consideration is: where are you planning to sell them? To set up a stand at the local marché, you'll need a business registration, which involves registering for all the cotisations and (potentially) the VAT/TVA.
To sell through local shops, you'll need to have a SIRET/SIREN on your invoices (which also requires a business registration).