Spinach and Blue Cheese Biscuits

olive oil

frozen chopped spinach, thawed and pressed

chopped scallions

garlic, minced

salt and pepper

freshly ground nutmeg

crumbled blue cheese (or feta would be a lovely substitute!)

all-purpose flour

granulated sugar

baking powder

baking soda

salt

cold unsalted butter, but into small cubes

large egg, lightly beaten

cold buttermilk

large egg, beaten for egg wash