Reduce heat to low and stir for 8-10 minutes until thickened.
Stir in salt and gradually add soymilk until smooth.
Turn off the heat and cover to keep warm.
Sauté the Mushrooms & Vegetables
Heat olive oil in a large pan over medium heat.
Add sliced shiitake mushrooms, cherry tomatoes, and garlic, put the lid on, and cook for 4-6 minutes until mushrooms and cherry tomatoes start to brown and release their juices.
Stir in dried oregano and cook for another minute until fragrant.
Stir in fresh chopped spinach and parsley and cook for another 1-2 minutes until wilted.
Drizzle with balsamic vinegar, turn off the heat, season with salt and pepper, and stir to incorporate.
Assemble and Serve
Spoon creamy polenta onto serving plates.
Top with mushroom and vegetable mixture.
Garnish with more fresh parsley and optional crushed red pepper flakes and vegan cashew parmesan cheese for extra flavor and color.
Serve warm and enjoy!
Store leftovers in air-tight containers in the refrigerator for up to 3 days.