Shrimp Salad with Cilantro Lime Viniagrette

4 T. olive oil
1# shrimp
salt and pepper
1/2 small onion. diced small
2 garlic cloves, minced
1/2 t. ground cumin
1/4 t. cayenne pepper
1/4 c. fresh lime juice
1/4 c. fresh cilantro
1 head Bib lettuce
2 medium carrots, shredded

In a large skillet, heat 2 t. oil over medium heat.  Season shrimp with salt and pepper.  Add shrimp to skillet and cook until opaque throughout, about 5 minutes.  Transfer shrimp to a plate.
To skillet, add 1 t. oil and onion and cook until translucent about 3 minutes.  Add garlic, cumin, and cayenne and cook until fragrant, 1 minute.  Remove skillet from heat.  Add cooked shrimp and toss to combine.
In a medium bowl, whisk together 3 T. oil, lime juice, and cilantro.  Season with salt and pepper.

Divide lettuce among 4 plates.  Top with shrimp mixture, carrots, and cilantro leaves.  Drizzle with dressing.