01 -
Start with a big pot of salted water and let it boil. Cook the pasta until it’s just slightly firm to the bite—about a minute before what the package says. Scoop out one cup of the pasta water before draining everything. Don’t rinse; the starch will make the sauce stick better.
02 -
As the pasta boils, in a big oven-friendly skillet, warm together the butter and olive oil over medium heat. Toss in the minced garlic and, if you like, some red pepper flakes. Stir for 1-2 minutes until it smells great. Keep an eye on it so the garlic doesn’t burn.
03 -
Add the lemon juice and broth, letting it all bubble for two minutes. Stir in the zest and half the parsley for extra freshness. Sprinkle in salt and pepper, adjusting until it tastes right for you.
04 -
Toss the shrimp into the skillet, cooking until they barely turn pink and curl up a bit, 2-4 minutes depending on their size. Remove from heat before they overcook, since they’ll continue cooking in the oven.
05 -
Bring the pasta into the skillet, stirring gently to coat it well with the shrimp and sauce. Mix in half the Parmesan and mozzarella. If things seem a bit sticky, add some of that reserved pasta water. The texture should be saucy but not too thin.
06 -
Turn on your oven to 375°F (190°C). If your skillet isn’t oven-friendly, shift everything to a 9×13 inch baking dish instead. Spread the rest of the cheeses evenly on top.
07 -
Bake the dish for 20-25 minutes until it’s bubbly and the cheese is melted with golden spots. If you want extra browning, switch to broil for the last minute or two, keeping a close watch.
08 -
After baking, let it sit for 5-10 minutes for the sauce to settle and thicken. Add the extra parsley on top for a pop of color and fresh taste before serving.