Marinate Mushrooms: Mix mushrooms with hung curd, chilli powder, garam masala, ginger-garlic paste, and salt. Marinate for 30 minutes.
Prepare Dressing: Blend curd, green chilli, ginger, cumin seeds, coriander, mint, chaat masala, and salt into a smooth dressing.
Prepare Vegetables: Wash and chop onion, capsicum, carrot, cucumber, lettuce, and cherry tomatoes. Tear basil leaves.
Toast Croutons: Butter a pan and toast bread chunks until crisp. Set aside.
Cook Mushrooms: Heat oil in a pan and cook marinated mushrooms until browned on both sides. Set aside.
Sauté Capsicum: Lightly fry capsicum strips with a pinch of salt. Set aside.
Mix Salad: In a bowl, combine all vegetables, add dressing, and mix well.
Assemble: Add mushrooms and capsicum to the salad, toss gently, and garnish with lemon juice and croutons.