Grass-Fed Beef, Blue Cheese Sliders with Mushrooms & Onions

GRASS-FED BEEF BLUE CHEESE SLIDERS with MUSHROOMS & ONIONS! These sliders are so great on a bun or served as I did tonight along side a salad and baked potato. .
16 oz #grassfedbeef
1/2 sweet onion, thinly sliced 
Button or baby Bella mushrooms, thinly sliced. 
Divide ground beef into 4 sliders, place in heated nonstick #ceramicpan. Place mushrooms and onions around burgers. Salt and pepper lightly. Cook on medium high (flipping only once during cooking) until desired doneness. Just before removing from the pan, sprinkle on the blue cheese! Serve immediately .