Make Whipped Feta Crostini: creamy whipped feta on crisp baguette slices with endless topping ideas. Serve hot or chilled.
Preheat your oven and prepare the baguette slices for toasting: brush a rimmed baking sheet with a little olive oil, arrange the 1/2-inch diagonal baguette slices in a single layer, then lightly brush the tops with the remaining oil so each slice will brown evenly. Bake until the edges are just turning golden and crisp, remove them and flip once to finish both sides until pale-golden and crisp. Let the crostini cool on the sheet until they are room temperature and very dry — they should be crackly and sturdy enough to hold a generous spread without sagging.
Place the feta into the food-processor bowl fitted with the steel blade and pulse briefly to break up the block into coarse crumbs, about thirty seconds of working time. Add a small splash of olive oil, the milk or cream, and a grind of black pepper — these wet elements will begin to loosen the curd and soften the texture. Scrape the bowl down once so nothing sticks to the sides; at this stage the mixture is grainy but mellows visibly as the liquids begin dispersing through the curds.
Return the processor to whip until the mixture transforms into a smooth, airy, spoonable cream, about another minute of processing, scraping as needed so it becomes homogenous and pale ivory with tiny flecks of black pepper. The finished whipped feta should hold soft peaks yet be spreadable, glossy from the olive oil, and textured enough to read visually — a creamy cloud with the tiniest granular hints.

Working on the cooled crostini, use a small spatula to spread a generous layer of the whipped feta on each slice, pressing slightly so the cream adheres. Top each crostini with a variety of combinations — diced tomatoes with torn basil, silky smoked salmon with dill, thin apple or pear slices finished with a honey drizzle, roasted red peppers with kalamata olives, crumbled bacon with chives, a smear of spicy pepper jelly, prosciutto with a whisper of balsamic, or a scattering of chopped fresh herbs. Season any pieces lightly with extra black pepper or a tiny pinch of salt to taste, and arrange them artfully on a parchment-lined board for serving.
