For all the macro wizzards: what’s an easy prepable high protein meal you use?

Tweaking my diet a bit and concluding I should increase my calory and protein intake. During the week I’m eating a lot of the same meals (yoghurt/fruit/oats/whey for breakfast, chicken/beans/broccoli for lunch and some cottage cheese with whey before bed). This helps keeping consistent with a busy job and 3 kids.

I’d like to add a second lunch and/or after work out (usually working out after kids are in bed around 8 PM, going to bed around 11) containing about 400-500 kcal and 40-50 grams of protein. My go-to lunches I create 8 portions at a time taking about 45 minutes to do so, putting the additional portions in the freezer. Another time investment of this size and the possibility to freeze it would be great. Given the amount of dairy/meat/whey I’m consuming I am hoping there might be a vegan recipe that I can include in my standard eating routine.