Step 1: Preheat Oven : Preheat your oven to 350°F (175°C). Grease a 9×9-inch baking dish or similar size with butter or oil.

Step 2: Mix Dry Ingredients : In a bowl, combine rolled oats, baking powder, cinnamon, and salt.

Step 3: Mix Wet Ingredients : In a separate bowl, whisk together milk, eggs, honey, and vanilla extract.

Step 4: Combine Wet and Dry : Pour the wet ingredients into the dry ingredients and mix until combined. Gently fold in blueberries, reserving a few for topping.

Step 5: Bake : Pour the mixture into the prepared baking dish. Top with remaining blueberries and optional nuts. Bake for 35–40 minutes, until the top is golden and a toothpick inserted in the center comes out clean.

Step 6: Serve : Let cool for 5–10 minutes before serving. Serve warm, optionally with Greek yogurt, extra honey, or a splash of milk.