What recipe were they making?!

For the yogurt:
Place the contents of one container in a large-ish square of cheesecloth, tie the corners together with kitchen twine to form a bag, and either hang from the kitchen faucet (tied with twine) or place in a strainer over a bowl in the fridge overnight or longer for a thicker, spreadable yogurt "cheese. " Mix with one or more of the following: minced fresh dill/minced parsley/garlic minced with salt/minced chives, scallions, or, if you can get them, ramps (yummm). Serve with crackers, bread, baked potato, etc, and/or a chopped Mediterranean salad of tomatoes, cucumbers, and optional bell peppers.
Blintz "cake" (gâteau crèpe), (what I made recently when my blintz rolling skills failed): 8 to 12 crepes (many recipes available), 2 lb. of cottage cheese, drained overnight in a strainer in fridge.. Mix the drained cott. cheese with sugar, 1 egg yolk, and optional grated orange zest from 1 orange. Have ready a couple tablespoons melted butter. Brush a crepe with melted butter in a buttered, oven-proof pan, spread evenly with the sweet cheese filling, repeat till all the crèpes and filling are used, ending with a crepe. Bake 325-350 for about 20 minutes, covered. Serve warm with....... yogurt or crème fraîche and sugar.

Some ideas -

Greek yogurt: https://smittenkitchen.com/2020/04/layered-yogurt-flatbreads/

Cottage cheese: https://thepioneerwoman.com/cooking/sour-cream-noodle-bake/. I think you could substitute the Greek yogurt for the sour cream. This is one of my favorite pasta bakes.

I also like cottage cheese with pineapple. So good!

Mozzarella, cheddar cheese (& pre-cooked sausage): Crispy cheesy pan pizza. The recipe has been on this site recently, along with a video. I would top with sausage and a mix of the cheeses.

Alternatively, a frittata with these 3 ingredients.

Cheddar cheese: https://themom100.com/recipe/one-skillet-cheesy-beef-and-macaroni/. Add the chili powder (trust me).

JJ -
No I can't either imagine how to use this all in one recipe...
First, if it's too much for your household to eat now, you can freeze most items for later use (all ok to freeze except not sure about the cottage cheese).
Second, what to do with it all - sounds like a home edition of Chopped tv!
Possible dishes that spring to mind:
Welsh rabbit (with the cheddar) - usually over toast but you can vary the base if you don't have enough bread (use polenta, pasta, potatoes)
Cheese & potato soup (cheddar, mozza, potatoes)
Pasta dishes -
* mac and cheese,
* lasagna
* stuffed types from various cuisines - ravioli, pierogi, kreplach
Use the yogurt
* with cereal (instead of milk)
* with fruit, nuts and cookies for dessert parfait
* with vegetables to make dips (onion, spinach, etc)
* buzzed up with ice and additions (fruit, veg, nutritional supplements, etc) to make smoothies
Pizza - with sausage, mozzarella and/or cheddar
Cottage cheese in salads with fruits or vegetables