What do you cook without a recipe in a large batch? What's the process?

I am someone who follows a recipe to a T but now I'm trying to cook without one in larger portions. However, it's just so hard to estimate the right amount of ingredients for a dish. By the end of the week, I get so tired of the same portion and I feel like it's just a large amount of 1 dish so I'm trying to see what are people's favourite dishes to cook in batches.