4-½ c. (40 oz. or 630 g) of any biscuit mix such as Bisquick (see Note)
¾ c. grated Parmesan cheese, divided
¾ c. chopped green onions (“spring onions”)
2 eggs, slightly beaten
2 c. milk
Preheat oven to 350 deg. F. In a large bowl, combine the biscuit mix, ½ c. of the cheese, green onions, eggs, and milk. Roll dough into a soft ball, kneading four or five times on lightly floured work surface. With lightly floured hands, transfer the dough to a 9x13-in. baking sheet with low sides (basically, a cookie sheet) lined with parchment paper. Pat into a rectangle to fill the pan. Sprinkle with remaining cheese. Score dough into 2-x3-in. pieces, cutting to the base of the pan. Bake 40-to-45 min. Makes 24-to-30 biscuits.
To Make Ahead: Prepare dough up to 3 hr. before needed, rolling into a circle and refrigerating.
Note: Do not sift this mix! The measurement is 4-½ c. by volume, but 40 oz. by weight.