Jane’s Kitchen: Bourekas with Mashed Golden Potatoes and Caramelized Onions

4 – 5 yukon gold potatoes, medium size, peeled and cut into large chunks 2 yellow onions, medium size, sliced in thin half-moons 3 tablespoons olive oil 1 1/2 teaspoons kosher salt 2 sheets puff-pastry, homemade or store bought 1 egg, beaten for egg wash 2 tablespoons raw sesame seeds Thaw the puff pastry in […]