Caramelized Onion Smash Pasta

Slice the onions as thinly as possible so they soften evenly and melt into the sauce. Warm the butter and olive oil in a large saute pan over medium-low heat, add the onions with a pinch of salt, and cook slowly for 12 to 15 minutes, stirring often, until deeply soft and golden brown. Proper caramelization here gives the whole dish its signature sweetness.

Meanwhile, cook the pasta shells in well-salted boiling water until just shy of al dente, reserving a mug of pasta water before draining. The shells work well because they catch the sauce and little pieces of beef and onion. Do not rinse them; the starch on the surface helps the final sauce cling beautifully.

Increase the heat under the onions slightly and add the ground beef, breaking it up well with a spatula so it browns rather than steams. Cook until the meat has lost its raw colour and developed some darker caramelized spots. Stir in the minced garlic and Worcestershire sauce for the final minute so the aromatics stay fragrant.

Pour in the beef stock and scrape the base of the pan thoroughly to lift all the browned flavour. Add the cream and bring everything to a gentle simmer until slightly thickened. The mixture should look glossy and savoury, not dry. Taste now and season with the remaining salt and the black pepper as needed.

Add the drained pasta shells and toss to coat thoroughly, loosening with a splash of pasta water if necessary. Take the pan off the heat and fold in the grated cheddar and mozzarella in two additions, stirring between each one until melted. Adding cheese off the heat helps it emulsify smoothly into the sauce.

Finely chop the pickles and half the chives, then stir them through the pasta for a subtle burger-like tang and freshness. Taste again and adjust the seasoning. If the mixture tightens too much as it stands, revive it with another spoonful of hot pasta water until it returns to a creamy, spoonable consistency.

Pile the pasta into warm bowls or serve straight from the skillet for maximum comfort-food appeal. Finish with the remaining chives and a few extra chopped pickles on top for contrast. Serve immediately while the cheese is still molten and the onions read as jammy, sweet, and deeply savoury.