Slice your yellow onions thin—aim for half-moons about ¼ inch thick. Melt butter with olive oil in a big pot over medium heat until it's sizzling. Toss in the onions with a good pinch of salt. Now here's the part that takes forever but matters—cook them for 25-30 minutes, stirring every 5 minutes or so. I know it feels like watching paint dry but don't crank the heat to rush it. They should end up deep golden brown and smell sweet, not burnt and bitter. This slow cooking is literally the only way to get that one pot french onion pasta flavor right.

Throw in the minced garlic once your onions look caramelized and cook for maybe a minute. Pour in a splash of red wine if you've got an open bottle, or just use extra broth. Scrape the bottom of the pot hard—all those stuck brown bits are flavor gold. Add a couple good shakes of worcestershire sauce. Strip the thyme leaves off the stems and toss them in with a bay leaf or two. Season it with salt and pepper now so everything gets friendly. This is what makes your french onion pasta recipe actually taste like the soup instead of just pasta with onions.

Pour in your beef broth and crank the heat to get it boiling. Once it's bubbling hard, add your dried pasta right into that pot. Give it a good stir so nothing sticks to the bottom. Turn the heat down to medium and let it cook according to whatever the box says. Stir it every few minutes as the pasta soaks up all that beefy onion broth. The whole point of french onion soup pasta is cooking the pasta IN the sauce, not next to it.

When the pasta's cooked and most of the liquid's gone, kill the heat. Fish out those bay leaves before someone bites into one. Pile on the shredded gruyere while everything's still steaming hot. Stick the lid on for 2-3 minutes so the cheese gets all melty. Stir everything together gently—you want that cheese mixed in, not just sitting on top. Hit it with some fresh thyme and more gruyere if you're feeling generous. Eat it right away while the cheese is still doing that stretchy, gooey thing.