Can I make this without sardines?
Yes. Substitute with canned tuna in oil, white beans, or omit entirely for a classic caprese flatbread. The sardines add omega-3s and authentic flavor, but the dish works without them.
Should I drain the sardines before using?
Partially drain them to avoid excess liquid soaking the flatbread, but retain some of the tomato sauce for flavor and moisture.
Can I prepare this ahead of time?
Assemble up to 2 hours ahead, then bake just before serving. Add fresh basil and balsamic glaze right after baking to prevent wilting.
What's the best way to heat the flatbread?
Toast the flatbread in a 400°F oven for 3–5 minutes, or use a skillet until warmed and lightly crisped, before topping.
Is this recipe gluten-free?
Only if you use a gluten-free flatbread. Check your sardine can label for gluten as well, though most brands are gluten-free.