Position oven racks in upper and lower thirds; preheat oven to 450°F.

Cook squash using either microwave or oven method. Cut in half lengthwise.

In large skillet, heat oil. Add broccolini, garlic and red pepper. Cook, stirring frequently, for 2 min. Add water and cook, stirring until broccolini is tender. Transfer to large bowl.

Use a fork to scrap the squash from the shells and add to broccolini mixture. Place squash shells in baking dish.

Add in 3/4 cup cheese, 2 T Parmesan, Italian seasoning, salt and pepper. Mix well.

Divide mixture between the two shells. Top with remaing 1/4 cup cheese and 2 T Parmesan.

Bake on lower rack for 10 min. Move to upper rack, turn broiler to high and broil until cheese starts to brown, about 2 min.