Cut in the Butter: Add the cold, cubed butter to the dry ingredients. Use a pastry cutter or your fingers to cut the butter into the flour mixture until it resembles coarse crumbs.
Combine Wet Ingredients: In a separate bowl, whisk together the Ultramel custard, milk, egg, and vanilla extract until well combined.
Form the Dough: Make a well in the center of the dry ingredients and pour in the wet mixture. Stir gently with a fork until the dough comes together. If the dough is too dry, add a little more milk, one tablespoon at a time, until the dough is moist but not sticky.
Knead and Shape: Turn the dough out onto a lightly floured surface and knead gently a few times until it comes together. Pat the dough into a circle about 1 inch thick.
Cut the Scones: Use a round cutter or a glass to cut out scones from the dough. Place the scones on the prepared baking sheet. Gather any scraps of dough and repeat the process until all the dough is used.
Brush and Sprinkle: If desired, brush the tops of the scones with a little milk and sprinkle with sugar for a nice finish.
Bake: Bake the scones in the preheated oven for 12-15 minutes, or until they are golden brown and cooked through.
Cool and Serve: Allow the scones to cool on a wire rack. Serve them warm with additional Ultramel custard, butter, jam, or your favorite scone toppings.
Enjoy your Ultramel scones as a delightful treat for breakfast, tea time, or dessert!