Berry Creamy Baked Oatmeal

Name: Berry Creamy Baked Oatmeal
Ingredients: Nonstick cooking spray; 2 1/2 cup Planet Oat Unsweetened Original Oatmilk, plus more for serving; 2 large eggs; 1/4 cup maple syrup; 2 teaspoon finely grated orange zest; 1 teaspoon ground cinnamon; 1 teaspoon baking powder; 1 teaspoon ground ginger; 1/2 teaspoon kosher salt; 1/4 teaspoon freshly grated nutmeg; 3 cup old-fashioned rolled oats; 3 tablespoon golden flaxseeds; 2 cup fresh raspberries, blackberries, blueberries, or a combination of both, plus more for serving; 3 tablespoon turbinado sugar