Makes about 15.
1 1/2 cups firmly packed brown sugar
Using electric mixer fitted with dough hook or paddle, mix first 6 ingredients in large bowl. Add water, butter and egg and mix until smooth dough forms, about 4 minutes. Transfer dough to greased bowl. Cover with plastic and clean towel. Let dough rise in warm draft-free area until doubled in volume, about 30 minutes.
Butter 9×13-inch baking dish. Bring 1 cup brown sugar and 1/2 cup butter to boil in heavy small saucepan. Boil 1 minute. Remove from heat and stir in 1/2 cup walnuts. Pour into prepared dish. Punch dough down. Roll out on lightly floured surface to 15×9-inch rectangle. Spread dough evenly with remaining 1/2 cup butter. Sprinkle with remaining 1/2 cup brown sugar and 1 tablespoon cinnamon. Sprinkle with remaining 1/2 cup walnuts and raisins. Roll up jelly roll style, starting at one long side. Slice dough into 1-inch-thick rounds.
Arrange dough slices cut side down in prepared dish, spacing evenly. Cover with plastic. Let rise in warm draft-free area until doubled, about 45 minutes.
Preheat oven to 350°F. Bake rolls until golden brown, about 45 minutes. Let stand 5 minutes. Turn out onto platter. Cool slightly. Serve warm.