Onion Cheddar Biscuits

These are based on a recipe from the 2014 Milk Calendar, except that I switched garlic powder for onion powder.  The family loved them!

2 cups all purpose flour
2 tbsp baking powder
1/2 tsp cream of tartar
1/2 tsp granulated sugar
1/2 tsp salt
1/2 cup cold butter, cubed
1 cup shredded cheddar
1/3 cup chopped green onions
1 cup milk

TOPPING
2 tbsp butter, melted
1/4 tsp onion powder

1. Preheat the oven to 450F.  Line a large baking sheet with parchment paper.
2. In a large bowl, combine the flour, baking powder, cream of tartar, sugar and salt.  Using a pastry blender or two knives, cut in butter until crumbly.  Stir in cheese and green onions.  Slowly add the milk, stirring with a fork, until the batter reaches a soft dough consistency.
3. On a lightly floured surface, knead the dough gently 3 to 4 times until it holds together.  Roll out to 3/4 inch thickness.  Cut into squares or use a 3 inch cookie cutter (or turn over a glass - my usual method). Re roll scraps once to make about 12 biscuits.  Place at least 2 inches apart on prepared baking sheet.  
4. Topping:  In a small bowl, combine melted butter and onion powder; brush biscuits with half of the mixture. 
5. Bake for 12 min or until starting to brown.  Brush with remaining butter mixture.  Bake for an additional 2 to 3 min or until golden brown.  Best served warm.