In a large bowl, whisk together the flour, baking powder and salt.
Add the grated cheese and combine with a fork.
Stir in the cooked greens.
Add 1 cup of milk and stir. Continue adding milk and mixing (switching to a hand at this juncture is good) until the dough just comes together and all the flour is incorporated.
Using a large spoon, cookie scoop or a 1/2 cup measuring cup, portion the dough into a parchment or Silpat-lined baking sheet.
Bake drop biscuits at 400 degrees F for 18-20 minutes, until they are golden brown on top and the visible cheese bubbles slightly.
Remove pans from the oven. Serve hot.
These biscuits freeze well, either prior to baking or after.