Crescent, I don't precook everything before freezing. Chickens and fish are marinated in a few different ways and packed in freezer bags. Some of these are just put straight into the oven and some are used as a base for other dishes, such as biryani, khawser, etc.
Besides that, I make four different types of samosas (lamb mince, veg, chicken and jalepeno/chicken/corn), seekh kababs, chappal kababs (round flat ones), chicken nuggets, cheese balls, chicken squares, cutlets, etc. these all just need frying. I fry after magrib salah so that it's all piping hot by the time the boys come home from salah. It also means I'm not standing at the stove in the precious time leading to Iftar.
Then there's the pastries- chicken, lamb, steak and cheese and onion. I pop a few into the cold oven after Asar and turn it on half an hour before Iftar.
Then I do a few Shepards pies, steak pies, lasagnes, homemade pizzas, savoury bread rolls, etc. These I take out and put in the fridge at suhoor time, ready for the oven before Iftar.
And I do a few frozen desserts too. I also chop spinach up and pack into freezer bags, and peppers, leeks, spring onion, cauliflower etc so there's less to do when actually cooking. Cheese is grated and frozen, chutney bases (coriander, chilli, garlic, cumin) are prepared and frozen into ice cubes, garlic and ginger in peeled, minced and packed into small bags to defrost each week.
I know it sounds like a mammoth task but it means we spend less time in the kitchen in Ramadan. I can have an elaborate Iftar with 3-4 different savouries, two dishes, a dessert and dips/salad/fruit salad, all set out with only 30-45 mins of preparation.
Tbh, nearly all the women in our families do it. It's a Gujrati thing
. My mum does the same as do all my aunts and cousins and my gran also used to prepare for Ramadan in a similar way by stocking up the freezer. The one thing I do differently from them is that I have a maximum one hour time limit for cooking and clearing up afterwards and I also don't go into the kitchen to cook between Asar and magrib if it can be helped.