La Maison d'Isabelle
Award-winning all-butter croissants (named best croissant in Paris, 2018)
Classic patisserie counter with quick coffee on the side. Staff are efficient and friendly. Best early; popular pastries sell out.
In Latin Quarter, Paris. Easy to fold into a morning or a longer afternoon; there's usually something else worth a stop within a few minutes' walk.
La Maison d'Isabelle is a small boulangerie-pâtisserie on Boulevard Saint-Germain in the Latin Quarter (near the Sorbonne), led by Isabelle Leday and Geoffrey Pichard. It is best known for all-butter croissants made with Charentes-Poitou AOC butter and organic flour, which won the top prize for best croissant in Paris and the surrounding region in 2018. Reviewers consistently describe the croissants as crisp, flaky, and intensely buttery, and very affordably priced (~€1.40). It operates as a fast takeaway counter where you order and collect; insiders ask when the next warm batch is due (usually within ~10 minutes), confirming the curator's note that it's best early and that popular items sell out.