Got this from Recipezaar.com and made it Christmas morning. It was delicious.

Ingredients
3 (8 ounce) cans buttermilk biscuits

1 cup sugar
2 teaspoons cinnamon
1/2 cup margarine
1 cup brown sugar
1/2 cup chopped pecans

Directions
1.Cut each biscuit in fourths with scissors.
2.Shake biscuits in bag with sugar and cinnamon.
3.Layer biscuits into greased tube pan.
4.Sprinkle with nuts.
5.Melt margarine and brown sugar and boil 1 minute.
6.Pour over biscuits.
7.Bake for 35 to 40 minutes at 350 degrees.
8.Let stand 10 minutes before removing from pan.
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