Start by combining flour, salt, oil, and water in a large bowl. Mix gently with a wooden spoon, then finish by kneading lightly with your hands. The goal is just to bring the ingredients together without overworking the dough.
In another bowl, mix flour and sugar, then cut in the butter using a pastry cutter or fork. This creates a flaky texture for the pastry layers, which is essential for that classic hopia feel.
Flatten the first dough, then layer it with the second dough. Place a scoop of ube filling in the center, fold, and seal the edges. Brush with egg wash for a beautiful golden finish before cooking.
Traditionally, these are baked, but this version cooks on a stovetop. Heat a non-stick pan and cook each piece over medium heat until lightly browned and crispy on both sides. Cool slightly before serving.