Creating Blueberry Oat Waffles is straightforward if you follow these simple steps:

1. Preheat Waffle Iron: Preheat your waffle iron according to the manufacturer’s instructions.

2. Mix Dry Ingredients: In a large bowl, combine the rolled oats, flour, baking powder, salt, and sugar. Mix well to ensure even distribution.

3. Combine Wet Ingredients: In another bowl, whisk together the eggs, milk, vegetable oil, and vanilla extract until smooth.

4. Combine Mixtures: Gradually add the wet ingredients to the dry mixture, stirring until just combined. Be careful not to overmix; a few lumps are okay.

5. Add Blueberries: Gently fold in the blueberries, ensuring they are evenly distributed throughout the batter.

6. Cook Waffles: Lightly grease the waffle iron with cooking spray or oil. Pour the appropriate amount of batter into the preheated waffle iron, close the lid, and cook until golden brown (about 3-5 minutes, depending on your waffle iron).

7. Serve Immediately: Carefully remove the waffle and repeat the process with the remaining batter.

8. Keep Waffles Warm: If making multiple waffles, keep cooked waffles warm in a preheated oven at 200°F (93°C) until all are ready to serve.