IMHO, only if you give up on meat and dairy altogether, you will really feel the difference.
1. Fast and hearty curry. For example, squash and spinach. Peel and cut the squash (some varieties don't require peeling, e.g. Uchiki Kuri a.k.a. Hokkaido squash as it's where it comes from) in cubes. I first shortly heat up spices in a dry pan to release all flavours: half a teaspoon of ginger and 1 teaspoon of ground cumin, coriander, turmeric and hot chilli - depending on how spicy you like it (I probably add some cinnamon and nutmeg too - it's in my muscle memory
). Add some sunflower or rapeseed oil (because they are best for frying) and fry 1 onion in it. Add the pumpkin cubes and 2-3 chopped garlic cloves and cook for about 10 minutes. Now there are two options: add a can of 1) coconut milk (which I don't like) or 2) chopped tomatoes, a really heaped spoonful of cashew butter, have a teaspoon of salt and sugar. Add a big bunch of spinach and cook until sufficiently soft. Serve on rice or with bread/baguette decorated with fresh coriander.
2. Ukrainian! Borscht
(BTW, Poles cannot make borscht despite claiming that it's their traditional dish) - there are lots of recipes, but the simplest every-day one is to cook a vegetable broth, cut or grate a bunch of beetroots, add chopped fried onion and 1 garlic clove), spices (1 bay leave, 2 allspice berries, 1 clove, which you need to remove before serving - good luck, pepper and hot paprika), you can also add herbs such as marjoram or lovage and any veggies you like (cubes of potatoes, cooked beans, cabbage, etc.). I serve it with croquettes: fry big flat pancakes with some salt instead of sugar. For filling fry chopped mushroom and onion and add to chopped sauerkraut, add salt and pepper according to taste. Spread the filling on a pancake, roll it like this
(optionally: dip in a mixture of chickpea or other sticky flour with water, roll in fine breadcrumbs) and fry.
I eat lightly (mostly fruits, salads and cooked veggies) and like oriental flavours. I know and tried out lots of recipes of many kinds. If you tell me what you and your family like, I come up with something better suited to your taste buds and calorific needs.