Preheat the oven to 375 degrees F.and line a muffin pan with 8 large paper.
In a medium bowl, whisk together the milk, egg, egg yolk, maple syrup, and vanilla.
Add the butter and stir well.
In a separate bowl, whisk together the flour, sugar, baking powder, and salt.
Add the milk mixture and stir gently.
Fold in the blueberries gently.
Divide the batter among the prepared muffin cups.
Bake until golden and a wooden pick inserted in the center of a muffin comes out clean 25-30 mins.
When the muffins are out of the oven and cool enough to touch, poke holes in the tops witha toothpick and pour on some bacon syrup.