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1
Preheat oven to 400u00b0.
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2
Pierce each beet with a fork; wrap in foil. Bake at 400u00b0 for 1 hour and 15 minutes or until tender; cool. Peel red beet; cut into 8 slices. Place in bowl with 2 teaspoons olive oil, 1/8 teaspoon salt, and 1/4 teaspoon pepper. Toss gently. Repeat the procedure with golden beet and remaining oil, salt, and pepper.
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3
Reduce oven temperature to 375u00b0.
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4
Heat butter in a large skillet over medium-high heat. Add mushrooms and the next 4 ingredients (through shallot); saute 4 minutes or until tender, stirring frequently. Add nuts, broth, and wine; cook 1 minute or until liquid evaporates. Transfer mushroom mixture to a medium bowl; cool. Stir in cheese.
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5
Place 1 phyllo sheet on a large cutting board (cover the remaining dough to prevent drying); coat phyllo sheet with cooking spray. Top with another phyllo sheet; coat with cooking spray. Gently press phyllo layers together. Arrange 2 slices red beet in center of 1 short edge of phyllo, leaving a 4-inch border. Top with 1/2 cup mushroom mixture; arrange 2 slices golden beet over top of mushroom mixture. Fold over long edges to cover.
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6
Starting at the short edge with 4-inch border, roll up jelly-roll fashion. Place packet seam side down on a baking sheet coated with cooking spray; brush with egg. Repeat with remaining phyllo, red beets, mushroom mixture, golden beets, and egg. Bake at 375u00b0 for 25 minutes or until golden.
