Momo with white cheesy sauce

Name: Momo with white cheesy sauce
Ingredients: 1 cup Refined Flour; 1 tbsp Vegetable Oil; 1/2 tsp Salt; as required Hot Water to make the dough; 2 tbsp Cabbage Julienne; 2 tbsp purple Cabbage Julienne; 2 tbsp Carrot Julienne; 2 tbsp green Capsicum Julienne; 2 tbsp sweet corn; 1/4 cup shredded Cheddar cheese; 1/2 tsp crushed Black pepper; 1/4 tsp Salt; 1 tbsp Butter; 1 tsp Garlic Paste; 1 tbsp Refined Flour; 1 1/2 Cup Milk; 1/4 cup shreeded Mozzarella cheese; 1/4 tsp Black Pepper (crushed); 1/4 tsp Red Chilli Flakes; 1/4 tsp Chaat Masala; to taste Salt