With special thanks to Margarita , who shared this subject with us .
Slice 4 pounds butternut or calabaza squash into thick wedges and remove the seeds. Place cut-side up in a baking dish. Combine 1/3 cup maple syrup, 1/3 cup water, the zest and juice of 1 lemon, 1/2 teaspoon red pepper flakes, and a pinch each of salt and pepper; pour over the squash and dot with 4 tablespoons butter. Bake 20 minutes at 350, then flip the squash and bake until caramelized and tender, 45 more minutes, basting halfway through.