For the best texture, choose large raw shrimp rather than pre-cooked shrimp, and thaw frozen shrimp overnight in the refrigerator or under cold running water before patting them very dry. Overcrowding the skillet can cause the shrimp to steam instead of sear, so work in batches if your pan is smaller, briefly wiping the skillet and reheating the fat between batches if needed. This dish is ideal for pairing with low-carb sides such as zucchini noodles, riced cauliflower, sautéed greens, or roasted broccoli, which help soak up the garlic butter sauce without adding many carbs. Leftover shrimp can be cooled completely and stored in an airtight container in the refrigerator for up to 3 days, then reheated very gently in a skillet over medium-low heat just until warmed through to avoid a rubbery texture. Each serving of this recipe stays well within keto guidelines, providing high-quality protein, generous healthy fats, and very low net carbohydrates when served with non-starchy vegetables.