In skillet, lightly brown ground beef and onion in olive oil; drain well.
Place in well-greased crock-pot.
Stir in remaining ingredients except eggs, milk and cheese until well blended.
Beat eggs and milk together.
Pour over other ingredients; stir well.
Dust with additional nutmeg.
Cover and cook on LOW setting for 8 to 9 hours or until firm.
Just before serving, sprinkle with grated cheese.
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