With a 2-in. pumpkin-shaped cookie cutter, cut a pumpkin from the center of four slices of bread (discard cutouts or save for another use). Butter one side of bread; place buttered side up on a greased baking sheet. Bake at 425° for 5-8 minutes or until lightly browned.
Butter one side of remaining solid slices of bread. In a large bowl, combine the tuna, sour cream, mayonnaise and garlic salt. Spread over unbuttered side of solid bread; top with cheese. Place on baking sheet.
Place cutout bread slices over cheese; press down gently. Cut green pepper into small pieces; place on cheese for pumpkin stems. Bake 5-8 minutes longer or until golden brown.
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