Combine butter, brown sugar, corn syrup and vanilla. Divide equally between 12 muffin cups coated with cooking spray. Sprinkle macadamia nuts into muffin cups. Place one roll in each muffin cup. Cover with plastic wrap coated with cooking spray; let rise until almost doubled.
Remove plastic wrap. Place muffin pan on a baking sheet. Bake at 350° for 20 minutes or until golden brown. Remove from the oven and invert onto a large serving platter. Serve warm.
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