Heat your oven to 375ºF. Line a baking sheet with a silicon baking mat.

In a large mixing bowl, beat together the coconut oil and sugars until blended. Add in the eggs one at a time and beat until mixed. Mix in the vanilla.

In a second bowl, combine the flours, baking soda, and salt. Gradually mix the dry ingredients into the wet ingredients (the dough will be very thick). Mix in the chocolate chips and marshmallows.

Chill the dough for 1 hour.

Drop rounded tablespoons of the dough 2 inches apart on the prepared cookie sheet. Bake for 8-10 minutes, or until the edges begin to brown. Let cool on the baking sheets for 1 minute, then cool completely on a rack.