Spray 7 X 11 baking dish, preheat oven to 325. Fill dish over half-full of frozen hash browns. Brown one small onion and pepper in a small amount of olive oil. Spread onion and bell pepper over potato mixture, then follow with bacon. Place in the oven for 30 minutes (watch so that it doesn't over-brown the bacon and the potatoes are done). Twenty minutes before serving, scramble the eggs until soft and spread over the potato mixture. Cover with cheese and return to barely warm oven to melt the cheese. Top each serving portion with a small scoop of sour cream and scallions.