In a small bowl, combine flax meal and warm water. Stir and let sit to thicken while you prepare the rest of the ingredients.
Preheat your pan over medium heat. Add oil and onion and cook until the onions are translucent.
Add garlic and stir to cook for about a minute or two (until fragrant).
To the pan, add celery and carrot. Use a tbsp or two of water to get things going. Cook until carrot is heated through with just a tiny bit of crunch to it, about 4-5 minutes.
Deglaze the pan with a hearty glug of white wine (I probably used about 1/4 cup) and stir to cook it off. Add banana pepper and purple cabbage and cook until those are heated through, about 3-4 minutes.
Stir in diced vegan sausage, onion powder, garlic powder, cumin and chili powder for about 2-3 minutes until everything is heated through.
Add chopped kale and another few tbsps of white wine (or water) to steam up the kale. Once barely wilted, finally add in the spinach. Turn off the heat and stir to combine everything (the remaining heat should wilt the spinach).
Transfer to a separate mixing bowl (to stop the mixture from cooking) and stir in the prepared flax egg. Set aside.