Preheat the oven to 425°F (220°C).
Rinse and drain the black beans. Wash and de-stem mushrooms. Remove the kale from the stem.
Toss sweet potato and squash with oil and roast for 20–25 minutes.
Add mushrooms, kale, onion, and garlic to a food processor. Pulse until finely chopped.
Add black beans and pulse a few times, leaving some texture.
Transfer mixture to a bowl and stir in the seasoning, parsley, flaxseed, and breadcrumbs.
On a lightly oiled hot griddle or skillet, form mixture into 4 even patties and cook on each side about 5-7 minutes. Don't flip them too soon! Make sure the bottom is solid before flipping, so it doesn't fall apart.
Dressing: Whisk together Dijon mustard, apple cider vinegar, and garlic.
Build Your Bowl: Add fresh spinach, tomatoes, red onion, avocado, sweet potato fries, roasted potatoes, and squash.
Drizzle with dressing and serve.