Blueberry Cinnamon Roll Casserole

I got this recipe some time ago from a Christmas site I belong to. Very good and easy. 

INGREDIENTS

• 1 can Pillsbury Grands Cinnamon Rolls
• 5 tablespoons unsalted butter melted
• 1/3 cup packed brown sugar
• 1 cup blueberries

INSTRUCTIONS

• Preheat oven to 350°F. Spray a 9-inch round or square pan with nonstick cooking spray.
• Open cinnamon rolls and separate. Set icing aside for later. Slice rolls into 6 pieces each. Place in prepared pan.
• Sprinkle blueberries over cinnamon rolls.
• Stir together melted butter and brown sugar, pour over rolls in pan.
• Bake for 25-35 minutes, or until the casserole is golden brown and cooked through.
• Drizzle icing over the hot rolls and serve.