Curried Onion Canapes

Yield: 1 Servings
Categories:
1lbSpanish onion, chopped fine
1/4cMayonnaise
1Egg yolk
1tsSalt
1tsCurry powder
1/2tsSugar
1Loaf (8oz) party rye bread
1lgCan grated Parmesan cheese
Butter
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