I'm out of inpsiration for things to cook for larger groups (6-10 persons)...
What we usually make:

Pasta with spinach, mushrooms, boursin, and sometimes bacon in it.

Couscous with raisins, feta, citron, mint, mushrooms, broccoli, and sometimes salmon in it.

Pasta with all kind of vegetables, red pesto and creme fraiche.

Curry with thai vegetables, pineapple, cocos milk, and rice.

But I've made this so much for friends, that I want something new that is delicious but very easy to make

Anyone suggestions?

The quickest and cheapest group recipe I know:
a euro per person and ready within 15 min.

bake some bacon and muchrooms
and boil spagetti.
Defrost some spinach in creme (spinazie a la creme)
throw it all together and add some cheese (mozarella) and maybe nuts

I usually make this one in the summer because it is really easy

You need one can of tuna
one cucumber
three tomatoes
three spoons of mayonaise
and some macaroni

cook the macaroni
cool it
slice the cucumber and the tomatoes
and then mix it all