Green Onion and Cheddar Cast Iron Biscuits

I have kids. Lots of kids. And most of them are hungry allllllll the time. So far, my hungriest teenager can't put down more than two. But it's fun watching him try....

2 C flour
4 T baking powder
2 T sugar
1/2 T salt
1/2 C Shortening
1 egg
2/3 C Milk

Combine flour, bp, sugar & salt. Cut in shortening. Beat in egg with milk; stir into dry ingredients. Knead. Roll out 3/4" thick; cut into biscuits. I just used a mason jar ring. Bake at 450 for 12 min.