Step 1

Preheat oven to 400°. Cut pumpkin and squash in half lengthwise; discard seeds or save for toasting. Place pumpkin and squash in 2 greased 15x10x1-in. baking pans, cut side down. Bake, uncovered, 40-50 minutes or until tender.

Step 2

Cool slightly; scoop out flesh and place in a large bowl. Mash flesh with sugar, maple syrup, butter, salt and cinnamon. Transfer to a greased 13x9-in. baking dish. In a small bowl, mix flour, brown sugar and oats; cut in butter until crumbly. Stir in walnuts. Sprinkle over squash mixture. Bake, uncovered, 35-40 minutes or until bubbly and topping is golden brown.