Combine first 5 ingredients in a medium bowl. Gently fold in crabmeat. When crabmeat is evenly coated, fold in bell pepper, cucumber, and green onion.
Melt butter in a medium skillet. Add breadcrumbs and cook, stirring frequently, over high heat 4 minutes or until golden brown and toasted.
Serve crabmeat salad over mixed greens, and top each serving with toasted breadcrumbs.
Wine note: Pour a 2005 New Zealand Sauvignon Blanc, such as the 2005 Huia Sauvignon Blanc.