Preheat your oven to 350°F (180°C). This ensures that your bars will bake evenly and achieve the perfect texture.
In a large mixing bowl, combine the rolled oats, protein powder, and a pinch of sea salt. Stir these dry ingredients thoroughly to ensure that the protein powder is evenly distributed throughout the oats, which will enhance the flavor and nutritional value of your bars.
In a separate bowl, mix together the creamy almond butter, pure maple syrup for a touch of sweetness, and a splash of vanilla extract for added flavor.
Gradually add the wet mixture to the dry mixture, stirring gently until everything is well combined. Once the mixture comes together, fold in the frozen mixed berries, which will add a burst of fruity flavor and natural sweetness to your bars.
Press the mixture firmly into a parchment-lined baking dish, spreading it evenly across the bottom. Bake in the preheated oven for 20-25 minutes, or until the edges are golden brown and a delightful aroma fills your kitchen.
Once baked, remove the dish from the oven and let the bars cool completely in the pan. This cooling step is crucial; it allows the bars to set properly. After they have cooled, slice them into squares, and enjoy your nutritious and delicious berry protein oat bars as a perfect snack or breakfast option!