Preheat oven to broil. Bring a large pot of water to boil under high heat. Peel and quarter potatoes, then place into boiling water, cook until fork-tender (approx. 15 minutes) and drain potatoes.
In a large pan under medium heat, add meat and break down in the pan. Brown meat and add onions after about three minutes, or when oil starts to seep out from meat. Cook approx. 15 minutes.
Drain the fat from the meat and onions, and add carrots, green beans and pepper to taste. Mix warm water (microwave about 40 seconds) and Better than Bouillon, then pour into pan and let simmer for approx. 15 minutes, or until most of the liquid has cooked off.
Mash the potatoes with sour cream, butter and salt to taste.
In 9" x 12" casserole dish, spread meat into bottom, then scoop and smooth mashed potatoes on top. Sprinkle cheddar cheese over top. Broil for about 5 minutes, until cheese is bubbly and/or starts to get brown and crackle, and sprinkle some fresh pepper on top. Enjoy!
