Preheat oven to 375 F.

For the meat mixture-

Dice onion into small pieces. Place ground beef and onions into a frying pan and cook till meat is cooked through. Drain excess fat from meat and return to pan. Add seasonings, frozen peas, BBQ sauce and ketchup. Stir to combine.

For the biscuits-

In a medium mixing bowl whisk together the flour, salt, sugar, baking powder and baking soda. Cut in the butter with a pastry blender (or a few pulses in a food processor) till the butter is in small pieces. In a separate small bowl combine the buttermilk, milk, and egg. Make a well in the center of the dry ingredients and add in the milk mixture. Stir till just barely combined. It will still be lumpy.

Assembly-

Spray a muffin tin well with cooking spray. Place a scoop of biscuit dough in each hole and press up the sides and make a cup out of the dough. This is a sticky process and isn’t super pretty looking at this point. Don’t worry, it will turn out. Fill the dough cups with the meat mixture and place in the oven for 7 minutes. Remove from oven, top with shredded cheese, and return to oven for another 5-7 minutes, or until biscuits are golden brown.