Cut butter into tablespoons and place in bottom of 9x13 casserole dish. Preheat oven to 350 degrees. Place casserole dish with butter into oven during preheat. This will melt the butter for your recipe and grease your pan at the same time. Butter should be fully melted by the time all your mixing is done. I am all about saving time and dishes.
In a 4 cup measuring cup, combine milk, eggs, and maple syrup. Mix well with a fork and set aside.
In a separate bowl combine flour, butter, salt and baking powder with a whisk.
Pour liquid ingredients into dry ingredients. Whisk until combined. Do not overmix.
Remove melted butter from oven. Break up any remaining clumps with a fork and mix until dissolved. Pour butter into batter and fold in gently.
Fold in wild blueberries (frozen is okay). I like to gently swirl them in.
Pour batter into pre greased casserole dish.
Bake in a 350 degree oven for 25-30 minutes, or until golden brown and toothpick inserted into the center comes out clean.
Serve with butter and real maple syrup.