Instructions: Preheat oven to 400 degrees. Mix walnuts, 4 tablespoons sugar and cinnamon in small bowl. Mix Bisquick and 2 tablespoons sugar in large bowl; add buttermilk and egg and stir until sticky dough forms.

Turn dough out onto work surface sprinkled with Bisquick; knead 6 to 8 turns until smooth. Roll out dough to 12- by 9-inch rectangle. Spread 2 tablespoons butter over, then sprinkle with walnut-sugar mixture, leaving 1-inch border on all sides. Starting at 1 long side, roll up jelly-roll style. Press roll to flatten slightly. Transfer, seam-side down, to ungreased baking sheet.

Using sharp knife, make crosswise cuts 3/4 of the way into roll along 1 long side, spacing cuts 1 inch apart. Shape roll into ring, with cuts facing outward; pinch ends together to seal. Turn cut slices to lie almost on their sides.

Bake cake until deep golden brown and baked through, about 25 minutes. Cool 10 minutes on sheet.

Stir 2 tablespoons butter in small saucepan over medium heat until golden brown, about 3 minutes. Remove from heat. Stir in powdered sugar, 5 teaspoons milk and vanilla, adding more milk by teaspoonfuls if icing is too thick. Drizzle icing over warm cake. Serve warm or at room temperature.

This recipe yields 8 servings.

Comments: Bisquick got its start in the early thirties when Carl Smith, a salesman for General Mills, took a late-night train ride. He went to the dining car in hopes of finding something to eat, and was pleasantly surprised to be served freshly made biscuits. When he asked about them, the chef confessed that he kept a pre-mixed batch of ingredients for the dough in the freezer for late orders. Smith reported back to General Mills, suggesting that they market such a mix, and they did. But it"s not just for biscuits; Bisquick can be used to make pancakes and waffles, and this luscious coffee cake, too.

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