This slow cooker 4-ingredient frozen shrimp using icy unthawed shrimp is the definition of weeknight ease: you literally dump the shrimp in straight from the bag, add four pantry staples, and let gentle heat do the work. The result is tender, garlicky, buttery shrimp in a light sauce that’s perfect over rice, pasta, or crusty bread. While shrimp stews and braises show up in coastal cuisines around the world, this version leans into classic Midwestern practicality—minimal prep, big flavor, and a dinner that disappears fast enough to cause a little friendly competition for seconds.
Serve the shrimp and its buttery garlic sauce over steamed white or brown rice, or spoon it onto hot buttered noodles for something more comforting. A crisp green salad with a tangy vinaigrette balances the richness, and steamed broccoli or green beans make an easy vegetable side. If you’re a bread lover, warm crusty baguette or garlic toast is perfect for soaking up the extra sauce. A light, citrusy white wine or sparkling water with lemon works nicely alongside.
Slow Cooker 4-Ingredient Frozen ShrimpServings: 4
Ingredients
2 pounds frozen raw shrimp, peeled and deveined, tail-on or off (do not thaw)
1/2 cup unsalted butter, cut into pieces
4 large garlic cloves, minced (about 4 teaspoons)
1 teaspoon kosher salt
1 teaspoon dried Italian seasoning (or dried parsley and oregano blend)
Directions
Place the frozen shrimp directly into the bottom of a 4- to 6-quart slow cooker. The shrimp should still be icy and separate straight from the bag; do not thaw them first. Spread them out in as even a layer as you can manage—some clumping is fine.
Scatter the minced garlic evenly over the icy shrimp so it can infuse the cooking juices as everything warms up.
Sprinkle the kosher salt and dried Italian seasoning over the shrimp and garlic. The seasoning will look sparse at first, but it will distribute as the shrimp release their juices.
Dot the butter pieces across the top of the frozen shrimp. As the slow cooker heats, the butter will melt down through the shrimp, creating a simple, flavorful sauce.
Cover the slow cooker with the lid. Cook on LOW for 1 1/2 to 2 hours, or until the shrimp are just opaque and pink throughout. Begin checking at the 1 1/2-hour mark: gently stir once, making sure shrimp from the edges are rotated toward the center, and check a thicker shrimp in the middle to confirm it is fully cooked.
Once the shrimp are opaque and firm but still tender, immediately turn the slow cooker to WARM or turn it off. Give everything a gentle stir to coat the shrimp evenly in the buttery garlic sauce and redistribute the seasoning.
Taste the sauce and adjust the seasoning if needed with a pinch more salt. Serve the shrimp right away over rice, pasta, or with crusty bread, spooning plenty of the garlic butter over each portion so there’s enough to make everyone want seconds.
Variations & Tips
To add a bright note, stir in 1 to 2 tablespoons of fresh lemon juice and a handful of chopped fresh parsley right before serving—this keeps the lemon from tasting dull and the herbs from turning dark. For a little heat, add 1/4 to 1/2 teaspoon red pepper flakes along with the dried Italian seasoning. If you prefer a more Cajun profile, swap the Italian seasoning for 1 teaspoon of your favorite Cajun or Creole seasoning and reduce the added salt slightly, since many blends are salty. You can also turn this into a light creamy shrimp by stirring in 1/4 cup of heavy cream or half-and-half at the very end on WARM, just until heated through (avoid boiling dairy in the slow cooker so it doesn’t curdle). For extra vegetables, layer a cup of sliced bell peppers or zucchini under the frozen shrimp; they’ll soften in the buttery juices.
Food safety tips: Always start with high-quality frozen shrimp from a reliable source and keep it frozen until you’re ready to cook. It’s important that the shrimp reach a safe internal temperature of 145°F; they should be fully opaque and firm, with no translucent gray spots. Because slow cookers can vary in temperature, begin checking early and do not cook the shrimp for significantly longer than the suggested window—overcooking can make them rubbery and dry. Avoid cooking this on HIGH, as the shrimp can go from underdone to overcooked quickly. Once cooked, don’t leave the shrimp sitting on the counter; keep the slow cooker on WARM for up to 1 to 2 hours, then refrigerate leftovers promptly in a shallow container and eat within 2 days, reheating gently just until warmed through.
