Goan Hot cross buns (Snack)

Name: Goan Hot cross buns (Snack)
Cuisine: World Cuisine
Ingredients: 2 cup All-Purpose Flour; 1/4 cup Brown Sugar; 2 tsp Instant active yeast (If using dry yeast,please check recipe notes below); 1 Egg; 1/4 tsp All spice powder (Cinnamon , cardamom , Cloves powder mix ); 1/4 cup Sultanas; 1/4 cup Raisins; 1/2 tsp Salt; 1/2 cup Milk (warm); 3 tbsp Butter; 2 tbsp All-Purpose Flour; 1/2 tsp sugar; Water (as required); For the Egg Wash: -; 1 Egg; 1 tbsp Milk; 1 tbsp Butter (To brush top of baked buns); Jam (Optional, to serve); 2 tsp Oil (to grease the bowl and baking tray)