Step by Step Process: 1. Heat olive oil in a pan over medium heat. Add the finely chopped onion and sauté until translucent. 2. Add the ginger-garlic paste and sauté for another minute until the raw smell disappears. 3. Add the finely chopped tomato, green bell pepper, and grated carrot. Mix well and cook for 2-3 minutes until the vegetables soften slightly. 4. Add turmeric powder, red chili powder, garam masala powder, and salt to taste. Mix well and cook for another 2 minutes to allow the flavors to blend. 5. Take two slices of whole wheat bread and spread the prepared masala mixture evenly on one side of each slice. 6. Cover each slice with another slice of bread to form a sandwich. 7. Heat a non-stick pan or sandwich maker over medium heat. Place the prepared sandwiches and cook for 2-3 minutes on each side until they turn golden brown and crispy. 8. Once cooked, remove the sandwiches from the pan and cut them diagonally into halves. 9. Garnish with fresh coriander leaves and serve hot. Note: Each serving of this Spicy Masala Bread Sandwich provides approximately 280 calories, 32 grams of protein, and 4 grams of fat. Enjoy this flavorful Indian homemade cuisine in less than 30 minutes!