Preheat oven to 350°
Squash -- Wash whole butternut squash, halve it, and scoop out the seeds (save those for later to roast -- delicious). Bake in the oven for approximately 1 hour and 30 minutes, based on the size of your squash. Cook until golden brown and soft. Once cooled, cut into cubes.
Corn -- cook the corn on the cob: Boil in 8qt pot for 5-7 min. If you are using canned corn, drain and rinse.
Beans -- Rinse and drain well. Pat dry to remove excess liquid.
Red onion - Slice thinly.
Gently toss together the beans, corn, onion, a drizzle of balsamic vinegar, and cubed squash in a large bowl; cover and chill 2 to 3 hours.
Kale/Greens -- Layer greens of your choice on the bottom of serving bowls, place tossed mixture on top, and enjoy!
For an added kick (and health benefit) -- sprinkle a dash of black and cayenne pepper onto your serving and give it an easy toss.