Preheat the Oven: First, preheat your oven to 425°F (220°C) so it’s hot and ready for your biscuits.
Mix the Dry Ingredients: In a large bowl, whisk together the flour, sugar, baking powder, and salt until well combined.
Cut in the Butter: Add the cold, cubed butter to the dry mixture. Use a pastry cutter or your fingers to mix in the butter until the mixture resembles coarse crumbs.
Add the Blueberries: Gently fold in the fresh blueberries, being careful not to mash them.
Combine with Wet Ingredients: Pour in the milk and stir until just combined. Don’t overmix; this will help keep your biscuits fluffy.
Shape the Dough: Turn the dough out onto a floured surface and knead it gently a few times until it comes together. Roll it out to about 1-inch thick.
Cut the Biscuits: Use a biscuit cutter or a glass to cut out biscuits and place them on a baking sheet.
Egg Wash: Brush the tops of each biscuit with the beaten egg for a nice golden-brown finish.
Bake: Bake the biscuits in the preheated oven for 15-20 minutes or until they’re golden brown on top.
Enjoy Warm: Serve these biscuits warm and watch your family devour them in no time!