Preheat oven to 350F. Combine ice cream and butter in bowl. Add 1/2 cup flour; stir until soft dough forms. Coat hands with flour. Shape dough into ball; flatten into disk. Wrap in plastic; freeze until dough is firm, about 15 minutes.

Lightly grease baking sheet. Roll out dough on well-floured surface to 12 x 16-inch rectangle. Brush dough with jam, leaving 1/2-inch border at edges. Sprinkle with nuts and raisins. Starting at 1 long side, roll up dough, jelly roll style. Tuck ends under to enclose filling. Transfer strudel to prepared sheet. Using sharp knife, score top of dough into 1-inch sections, then brush with milk.

Bake strudel until golden, about 45 minutes. Run knife under strudel to loosen from sheet. Cool completely on baking sheet. Slice along score marks.

Makes 15 slices.