Prepare sausage according to package instructions, cool slightly and cut into 1/2-inch pieces; set aside.
In a bowl, combine hash browns, butter, salt and pepper; divide evenly into 12 greased muffin cups.
Press mixture onto sides and bottom of muffin cups.
Bake at 400°F for 12 minutes or until lightly browned.
Remove from oven, divide sausage pieces into muffin cups.
In a bowl, combine eggs, cheese and bell pepper.
Spoon mixture evenly into muffin cups.
Sprinkle with chives or onion.
Return to oven, bake 13-15 minutes or until set. Serve.
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