Preheat oven to 425°F (218°C).

Mix all of the everything bagel seasoning ingredients together.

Place the flour, 2 Tablespoons everything bagel seasoning, baking powder, baking soda, granulated sugar, garlic powder, and salt together in a large bowl or in a large food processor. Whisk or pulse until combined. Add the cubed butter and cream cheese and cut into the dry ingredients with a pastry cutter or by pulsing several times in the processor. Cut/pulse until coarse crumbs form. See photo above for a visual. If you used a food processor, pour the mixture into a large bowl.

Make a well in the center of the mixture. Pour 1 cup (240ml) buttermilk on top. Fold everything together with a large spoon or silicone spatula until it begins to come together. Do not overwork the dough. The dough will be shaggy and crumbly with some wet spots. See photo above for a visual.

Pour the dough and any dough crumbles onto a floured work surface and gently bring together with generously floured hands. The dough will become sticky as you bring it together. Have extra flour nearby and use it often to flour your hands and work surface in this step. Using floured hands or a floured rolling pin, flatten into a 3/4 inch thick rectangle as best you can. Fold one side into the center, then the other side. Turn the dough horizontally. Gently flatten into a 3/4 inch thick rectangle again. Repeat the folding again. Turn the dough horizontally one more time. Gently flatten into a 3/4 inch thick rectangle. Repeat the folding one last time. Flatten into the final 3/4 inch thick rectangle.

Cut into 3-inch circles with a biscuit cutter. (Tip: Do not twist the biscuit cutter when pressing down into the dough—this seals off the edges of the biscuit which prevents them from fully rising.) Re-roll scraps until all the dough is used. You should have about 8 biscuits. Arrange in a 10-inch cast iron skillet (see note) or close together on a parchment paper-lined baking sheet. Make sure the biscuits are touching.

Brush the tops with 1 Tablespoon buttermilk. Bake for 10 minutes. Remove partially baked biscuits from the oven and brush with remaining Tablespoon of buttermilk and sprinkle remaining everything bagel seasoning on top. Return to the oven until the biscuits are golden brown on top, about 10-15 more minutes.

Remove from the oven and enjoy warm.

Cover leftovers tightly and store at room temperature or in the refrigerator for up to 5 days.