Place 12 paper liners in a muffin pan; spray liners with cooking spray.
In bowl, combine hash browns, butter, salt and pepper. Press hash brown mixture into the bottom and up the sides of the muffin cups. Bake at 400 degrees for 12 minutes or until lightly browned.
Meanwhile, cook sausage according to package directions; cut into 1/2-inch pieces. Divide sausage among baked muffin cups.
Combine eggs, cheese and bell pepper. Pour over sausage. Sprinkle with chives. Bake for 13-15 minutes or until set.