Step 1: Preheat your oven to 375°F (190°C).
Step 2: In a large mixing bowl, combine the diced onion, red bell pepper, and green bell pepper.
Step 3: In a skillet over medium heat, cook the crumbled vegan sausage until browned, about 5-7 minutes. Set aside.
Step 4: Add the frozen shredded hash browns, cooked vegan sausage, and sautéed vegetables to the mixing bowl. Sprinkle in the Italian seasoning, garlic powder, onion powder, and paprika. Stir well.
Step 5: In another bowl, whisk together the vegan egg substitute, all-purpose flour, baking powder, and a pinch of kosher salt until smooth.
Step 6: Pour the 'egg' mixture over the hash brown and veggie mixture. Add the shredded vegan cheddar cheese and stir until combined.
Step 7: Grease your baking dish lightly with oil and pour the mixture in, spreading it evenly.
Step 8: Bake for 45-50 minutes, or until set and lightly browned. Check for doneness by inserting a knife into the center.
Step 9: Once baked, allow to cool slightly, garnish with parsley or green onions, slice, and serve.
