Arrange baguette slices on a baking sheet. Stir together butter and garlic; brush evenly on tops of baguette slices.
Bake at 350° for 10 to 12 minutes. Let stand 20 minutes.
Meanwhile, combine hard-cooked eggs and next 4 ingredients in a large bowl. Cover and chill at least 15 minutes or up to 2 days.
Spoon egg mixture evenly on toasted baguette slices.
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