Make-Ahead
Cut out and toast bread shapes as directed. Store in tightly covered container or resealable plastic bag. Prepare shrimp mixture as directed; cover and refrigerate until about 30 min. before serving time. Spread shrimp mixture onto toast cutouts, and broil as directed.
Great Substitute
Substitute 2 cans (6 oz. each) crabmeat, drained and flaked, for the chopped shrimp.