Wash the squash well and dry. Cut the squash in half length wise and scoop out the seeds with a spoon. Cut each half into 1/2 inch pieces width wise.
Toss in olive oil.
Place the squash pieces in a single layer in the air-fryer or baking sheet. Cook for 15 minutes at 400 degrees turning once half-way through.
While the squash is cooking, wash, dry and cut the stems off the brussel sprouts.
Chop the brussel sprouts (this may take a few minutes if they are small).
Add butter to a large skillet and then the chopped brussel sprouts (don't worry, they will wilt down after a couple minutes).
Don't over cook them, you want a little crunch and add balsamic vinegar and maple syrup.
Add salt and pepper after cooking for no more than 5 minutes.
Once the squash is ready season with salt and pepper.
In a large salad bowl/dish add the brussel sprouts. Top with the squash and pumpkin seeds.
If desired, add more balsamic vinegar and olive oil.