1. Preheat oven to 350°; spray 8-inch square baking dish with cooking spray.
2. In large bowl, whisk eggs, milk, granulated sugar, butter, orange zest and baking powder; fold in oats, cranberries and chocolate morsels. Spread oat mixture in prepared dish; bake 45 minutes or until top is golden brown and internal temperature reaches 160°. Cool oatmeal 5 minutes.
3. In small bowl, whisk powdered sugar and fresh orange juice; drizzle over oatmeal. Cut oatmeal into 6 pieces.