Halve squash lengthwise and scoop out seeds. Using a peeler, remove skin and white flesh until surface is deep orange. Coat with olive oil pray and season with salt & pepper. Roast 25 mins (flat-side down) in a baking dish until beginning to soften.
In a small bowl whisk melted butter with maple syrup and garlic.
Transfer squash to a cutting board and let cool slightly. Using a sharp knife, cut down through the rounded sides of squash halves, going as deep as possible but without cutting all the way through. Return squash to baking dish. Sprinkle All-Purpose Seasoning on squash, trying to get spice into cuts.
Brush top generously with butter mixture.
Return to oven and bake for 60 mins, basting with glaze after 30 mins.