Step 1: Preheat the Oven

Preheat your oven to 425°F (220°C). A hot oven is essential for achieving that perfectly golden biscuit crust.

Step 2: Make the Biscuit Dough

1. Mix Dry Ingredients: In a large mixing bowl, combine the flour, baking powder, salt, and sugar. Stir until well combined. This is the foundation of your biscuit pie, so make sure the ingredients are evenly mixed.
2. Cut in the Butter: Add the cold, cubed butter to the dry ingredients. Using a pastry cutter or your fingertips, work the butter into the flour mixture until it resembles coarse crumbs. You want small pea-sized pieces of butter for the flakiness that we’re after.
3. Add the Milk: Gradually pour in the milk, stirring gently until the dough comes together. Don’t overmix—just combine until there are no dry spots. If the dough feels too sticky, add a little more flour.

Step 3: Prepare the Filling

1. Choose Your Filling: If you’re making the berry filling, toss the berries with a tablespoon of sugar and set aside. For chocolate filling, simply measure out your chocolate chips. For custard, ensure it’s ready to go. For savory, mix the chicken with the soup and veggies in a bowl.
2. Let It Rest: Allow the filling to sit for about 10 minutes to marinate, especially if you’re using berries. This helps enhance the flavor.

Step 4: Assemble the Biscuit Pie

1. Roll Out the Dough: Lightly flour a clean surface and turn out your biscuit dough. Gently roll it out into a rectangle about 1/2 inch thick. Aim for a size that can cover your pie dish completely.
2. Line the Pie Dish: Carefully transfer half of the rolled-out dough to a greased 9-inch pie dish. Press it into the dish gently, making sure it covers the bottom and sides.
3. Add the Filling: Pour your chosen filling into the biscuit-lined pie dish. Spread it evenly to ensure every slice has a delicious bite.
4. Top with Remaining Dough: Roll out the remaining dough and place it over the filling. Seal the edges by pressing them together. You can crimp the edges with a fork for a pretty finish or just press them together with your fingers.
5. Cut Slits: Using a sharp knife, cut a few slits in the top crust to allow steam to escape. This will help your Biscuit Pie cook evenly and not become soggy.

Step 5: Bake the Pie

1. Egg Wash: Brush the top crust with the beaten egg. This gives the pie a lovely golden color as it bakes.
2. Bake: Place your pie in the preheated oven and bake for 25-30 minutes, or until the top is golden brown and the filling is bubbly. Keep an eye on it during the last few minutes to avoid over-browning.
3. Cool: Once baked, remove the pie from the oven and let it cool for about 10-15 minutes. This allows the filling to set a bit, making it easier to slice.

Step 6: Serve

1. Slice and Serve: Use a sharp knife to cut the pie into wedges. Serve warm, optionally topped with a dusting of powdered sugar or a scoop of vanilla ice cream for an extra indulgent treat.
2. Enjoy: Sit back, relax, and enjoy this delicious creation with your loved ones. The warm, flaky crust combined with your choice of filling is bound to be a hit!