What You’ll Need
This recipe truly delivers on its promise of simplicity with just five core ingredients that create a surprisingly elegant dish. You’ll need about two pounds of raw frozen shrimp, peeled and deveined—and it’s essential that they go into the slow cooker straight from the freezer, not thawed first. Tail-on shrimp look prettier and give you something to hold onto, while tail-off shrimp are easier to eat; either works perfectly.
For the luxurious sauce, you’ll need half a cup of unsalted butter, cut into small pieces so it melts evenly, along with four cloves of garlic, minced (or one and a half teaspoons of garlic powder if that’s what you have on hand). A quarter cup of fresh lemon juice—about two lemons’ worth—provides the bright, tangy balance that cuts through the richness of the butter. Finally, a teaspoon of kosher salt seasons everything beautifully, and you can always add a pinch more at the end if needed.
It’s worth noting that you should not add any water or broth to the slow cooker—the frozen shrimp will release their own liquid as they cook, creating the perfect amount of sauce on their own.
How to Make It
Start by placing the raw frozen shrimp in an even layer on the bottom of your four- to six-quart slow cooker. It’s fine if they’re a little clumped together, but try to scatter them as evenly as possible so they cook at the same rate. Scatter the butter pieces evenly over the top of the shrimp, then sprinkle the minced garlic (or garlic powder) and kosher salt over everything. Pour the fresh lemon juice over the shrimp and butter—and remember, no additional liquid is needed.
Cover the slow cooker with the lid and set it to cook on LOW. It’s important not to cook on HIGH, as the shrimp need gentle heat to cook evenly without becoming tough. Start checking around the one-and-a-half-hour mark, especially if your slow cooker runs hot. The shrimp are perfectly done when they are opaque, pink, and firm but still tender, with centers that are no longer translucent.
Once they’re cooked, gently stir the shrimp in the lemon-butter-garlic sauce to coat everything evenly. Taste the sauce and add a little more salt or a final squeeze of lemon juice if you’d like extra brightness. Turn the slow cooker to WARM and serve the shrimp straight from the crock, making sure to spoon plenty of that delicious sauce over rice, pasta, or crusty bread so it can soak up all the flavor.
Tips and Variations
A few small details make a big difference here. Always use raw shrimp—cooked shrimp will become tough and rubbery in the slow cooker. Fresh lemon juice is also essential; bottled juice lacks the brightness and complexity that makes this dish shine. The size of your shrimp matters for cook time—larger shrimp may need closer to two hours, while smaller ones might be done at the one-and-a-half-hour mark.
If you’d like to add a little heat, sprinkle in some red pepper flakes along with the garlic and salt. For a creamier sauce, stir in a splash of heavy cream or half-and-half right at the end, after the shrimp are cooked, and let it warm through on WARM for a few minutes. You can also swap the lemon juice for a quarter cup of dry white wine for a more classic scampi-style flavor.
For food safety, remember to cook the shrimp on LOW as directed and avoid using the WARM setting to cook from frozen, as it won’t bring the shrimp up to a safe temperature quickly enough. Once cooked, don’t leave the shrimp sitting on WARM for too long, and refrigerate leftovers promptly in a shallow container. They’ll keep for a day or two and should be reheated gently to avoid overcooking.
Enjoy this incredibly easy, restaurant-quality meal that proves simple ingredients can create something truly special!