Toasting Sourdough Crostini
A good crostini serves as the foundation for your best kitchen work. When you toast sourdough properly, you create a sharp, tangy crunch that holds its own against textures like burrata, tapenade, or roasted vegetables.
Consistency is your primary goal.
Use day-old or two-day-old sourdough; the reduced moisture content allows for a more uniform crunch without burning the crust.
- serrated bread knife
- heavy-bottomed rimmed baking sheet
- silicone pastry brush
What goes in.
- 1 loafsourdough bread, sliced 1/2 inch thick
- 1/4 cupextra virgin olive oil
- 1 clovegarlic, peeled and halved
- 1 pinchflaky sea salt
The Brush-and-Flip Method
Do not drizzle. Use a pastry brush to apply a thin, even coat of oil to each side. This prevents oil pools, which lead to uneven, oily soft spots rather than a uniform crust.
The method.
Heat the oven
Preheat your oven to 400°F (200°C) with the rack in the center position.
Prepare the slices
Lay the sourdough slices on the baking sheet in a single layer. Brush the tops lightly with oil.
First toast
Bake for 5 to 7 minutes until the edges begin to color.
Flip and finish
Turn each slice over. Brush the second side with oil and return to the oven for another 3 to 5 minutes until both sides are a uniform, pale gold.
Rub with garlic
While the bread is still hot, take the halved garlic clove and lightly rub it across the surface of each slice. The heat pulls the essential oils from the garlic into the porous bread.
Other turns to take.
Herb-Infused Oil
Steep fresh rosemary or thyme in your olive oil for an hour before brushing it onto the bread.
Hard Cheese Finish
During the final minute of baking, sprinkle finely grated pecorino over the slices to create a crusty cheese layer.
When it doesn't go to plan.
If the crostini are too hard, they will shatter when someone takes a bite; pull them when they reach a firm, straw-colored gold.
Store cooled crostini in an airtight container for up to two days, but refresh them in a 350°F oven for 3 minutes before serving.
Avoid using fresh-baked, soft sourdough; it will lack the structural integrity required to hold toppings.
The ones that keep coming up.
Can I toast these in a pan instead of the oven?
Yes. Use a cast-iron skillet over medium heat. Monitor them closely, as pan-toasting can produce dark spots rapidly.
Why is my crostini chewy in the middle?
The oven temperature was likely too low or the bread was too thick. Aim for a consistent 1/2 inch thickness and ensure the oven is fully preheated.
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