Preheat oven to 400 degrees. Mix equal parts Terrapin Ridge Farms Brown Sugar and Pecan Mustard, butter and maple syrup. Split squash and remove the seeds. Season with salt and pepper. Cook at 400 degrees face down on a sheet pan for 40 minutes, or until fork tender. Turn the squash over. Place half of each mustard mixture in each cavity. Return to oven and roast for additional 5 - 10 minutes, until brown.