Before leaving the house, combine the Bisquick, corn meal, sugar and salt. Place in a bag or container and pack along with the other ingredients.
In a large bowl or pitcher, whisk together all of the ingredients, except blueberries.
Fold in the blueberries.
Layout 6 pieces of non-stick Reynolds Wrap foil, dull side on top.
Fold the bottom left corner up to form half a triangle.
Fold the bottom up about one inch.
Fold the bottom right corner up to form the other half of the triangle.
Pour some batter into the cone.
Fold both sides toward the center.
Fold the top down over the opening.
Tuck the bottom corners under the triangle to seal.
Place on hot coals or a grill rack (if you have one).
Cook for a few minutes per side, depending on how hot the coals are.
Peek in the pouch. If the batter looks cooked through, they’re ready to serve.
Open and smother with butter and maple blueberry syrup.