Preheat a non-stick frying pan over medium heat. Add 1 tsp oil. Sauté the chopped onion for 5 minutes, then add tomato and cook for another 2–3 minutes.
Step 2: Mix the Batter
In a bowl, combine chickpea flour, garlic, paprika, salt, and pepper. Add soy milk and sparkling water. Whisk until smooth.
Step 3: Combine
Add the cooked vegetables and corn to the batter. Stir until evenly mixed.
Step 4: Cook the Omelette
Add 1 tsp oil to the pan. Pour the batter into the pan and spread evenly. Cook for 4–5 minutes on one side, flip carefully, and cook another 4–5 minutes.
Step 5: Garnish & Serve
Top with fresh herbs or vegan cheese if desired. Serve warm.