Take a large bowl and add flour, baking powder, baking soda, salt, and sugar. Mix well with a whisk. This helps everything spread evenly for soft and fluffy waffles.

In another bowl, add eggs, milk, melted butter, lemon juice, lemon zest, and vanilla. Whisk until smooth. The mixture should look creamy and slightly frothy for best texture.

Slowly pour wet ingredients into dry ingredients. Stir gently until just combined. Do not overmix. A few small lumps are okay and help keep waffles light and airy.

Gently fold in blueberries using a spatula. Be careful not to crush them. This keeps berries whole and juicy inside waffles while cooking.

Preheat waffle maker and lightly grease it with butter or oil. This prevents sticking and gives crispy golden edges to your waffles.

Pour batter into waffle maker. Close lid and cook until golden brown. Each waffle should be crisp outside and soft inside. Repeat until all batter is used.

In a small pan, melt butter and add maple syrup. Stir in powdered sugar slowly. Cook for 1–2 minutes until smooth and slightly thick.

Pour warm maple glaze over waffles. Serve immediately while hot. Add extra blueberries or lemon zest if you want extra freshness and flavor.