Place frozen shrimp in a colander under cold running water for 2–5 minutes, then pat dry
Heat a skillet over medium-high heat with 1–2 tbsp oil
Add shrimp in a single layer and cook 2–3 minutes per side until pink and opaque
Season with salt, pepper, garlic powder, paprika, or chili flakes as desired
Add butter and lemon juice in the last 30–60 seconds (optional)
Finish with chopped parsley (optional)
Preheat oven to 425°F (220°C)
Toss frozen shrimp with oil and seasonings; spread on a sheet pan in a single layer
Bake 8–12 minutes until pink and opaque, stirring once halfway
Preheat air fryer to 400°F (205°C)
Toss frozen shrimp with oil and seasonings; arrange in a single layer
Air fry 6–10 minutes until pink and opaque, shaking once halfway
Thaw shrimp in the microwave using the defrost setting for 1–3 minutes, then pat dry
Cook as above in a skillet, air fryer, or oven until pink and opaque
Boil salted water; add shrimp directly from frozen
Simmer 2–4 minutes until pink and opaque, then drain immediately
Toss with butter, olive oil, garlic, or sauce of choice