Safety 8511. The Happy Tart
A fruit tart and a macaron from the case, plus a quiche if you're staying. This is proper French patisserie technique applied to a case a celiac can order straight across.
The Happy Tart is a dedicated gluten-free patisserie, one of the longest-running in the region. The original Del Ray shop in Alexandria has closed, so Falls Church at Pearson Square is the one to drive to now.