Place the flour, sugar, baking powder, baking soda, salt, and garlic powder into a large bowl. Mix together and set aside.
Add 12 tablespoons of the cold butter into the flour mixture. Using a dough cutter or fork, cut in the butter until you have pebble sized pieces.
Stir in the shredded cheddar cheese.
Next add in the buttermilk. Use a spoon to stir together. If you have to, you can use your hands but leave that for the very end if possible.
Using a ¼ measuring cup, scoop out the biscuits and place them on a parchment-lined baking sheet.
Place the biscuits into the freezer for 10 minutes and preheat the oven to 400℉.
Bake the biscuits at 400ºF for 18 minutes. The tops should be slightly golden brown.
Once the biscuits are done, melt the 4 tablespoons of butter in a small bowl. Mix in the garlic salt and dried parsley.
Using a pastry brush, or spoon, brush the butter mixture on top of the baked biscuits.
Serve immediately.