This simple and light shrimp dish is great when served with crusty bread, pasta, or polenta. For an extra kick, season shrimp with a pinch of cayenne.
Season shrimp with salt. In a large skillet, heat 2 tablespoons oil over medium-high. In 2 batches, cook shrimp until golden brown, 2 to 3 minutes per batch. Transfer to a plate.
Add remaining 2 tablespoons oil, garlic, and red-pepper flakes to pan and cook until fragrant, about 1 minute. Add marinara and bring to a simmer. Return shrimp to pan and simmer until cooked through, about 1 minute.
Frozen Shrimp Shrimp is often frozen when caught, so buying it this way is as good as fresh.