Blackened Shrimp with Creamy Avocado Ranch Dressing

Blackened shrimp are juicy and full of flavor, served alongside a cool, creamy avocado ranch dressing. This healthy, crowd-pleasing appetizer is simple to prepare and works equally well as a starter, salad topping, taco filling, or main course.

Blackened shrimp appetizer with avocado ranch dressing

I love entertaining and offering a variety of appetizers. Alongside richer options, a lighter choice like blackened shrimp with avocado ranch helps balance the spread while still feeling special and flavorful.

The warm, spicy seasoning on the shrimp pairs perfectly with the herb-forward, creamy avocado ranch. The dressing uses avocado to add body and richness, eliminating the need for mayonnaise or sour cream.

Blackened shrimp on a platter with avocado ranch dressing

Why you’ll love this recipe:

  • Pan-seared blackened shrimp coated in a bold seasoning, served with a cool avocado ranch.
  • Versatile: serve it as an appetizer, over salad, in tacos, or as a quick weeknight main.
  • Minimal hands-on time; much of the prep can be done ahead.
  • Gluten-free and easily made dairy-free by using a non-dairy milk for the buttermilk substitute.

Recipe ingredients

Blackened shrimp avocado ranch dressing recipe ingredients

Ingredient notes

  • Shrimp: Wild jumbo shrimp are ideal. Use raw, peeled and deveined shrimp for convenience. Fresh or properly thawed frozen shrimp both work.
  • Blackened seasoning: A homemade blend gives the best control over heat. Start with 2 tablespoons for milder flavor or use 3 tablespoons for a spicier finish (for 2 lbs. shrimp).
  • Avocado: One small ripe avocado (or half a large) adds creaminess and body to the dressing without mayo.
  • Buttermilk: Use real buttermilk or make a dairy-free version by adding 1/2 tablespoon lemon juice or vinegar to 1/2 cup non-dairy milk and letting it sit for 10 minutes.
  • Herbs and spices: Garlic and onion powder add depth to the dressing, while fresh dill, chives and parsley brighten the flavor.

How to make blackened shrimp

This recipe comes together quickly. Most prep—like measuring the seasoning and chopping herbs—can be completed in advance.

Pro tip: Mix the blackened seasoning a day ahead and buy peeled, deveined shrimp to save time.

how to make blackened shrimp
  1. Toss the raw shrimp with the blackened seasoning and salt to taste until evenly coated.
  2. Heat olive oil in a large skillet over medium heat. Add the shrimp in a single layer and cook 2–3 minutes until seared, then flip and cook another 2 minutes or until pink and opaque.
  3. Remove from the pan and, if desired, finish with a squeeze of fresh lime juice.

How to make avocado ranch dressing

The avocado ranch is quick to blend and complements the spicy shrimp perfectly. The avocado adds thickness so you can skip higher-fat binders like mayonnaise.

Pro tip: Prepare the dressing up to a day in advance and store it chilled in an airtight container.

How to make avocado ranch dressing
  1. Combine avocado, lime juice, garlic powder, onion powder, buttermilk, chopped dill, chives and parsley in a food processor or blender.
  2. Process until smooth. Add additional buttermilk if you prefer a thinner consistency. Season with salt and pepper to taste.
Blackened shrimp in a pan

FAQs

How long does it take to cook shrimp?

Jumbo shrimp typically cook in about 4–6 minutes total. Cook in a single layer for roughly 2–3 minutes per side, depending on size.

How can I tell when shrimp is done?

Cooked shrimp will be uniformly pink and the body will form a loose “C” shape. Avoid overcooking, which makes shrimp tough.

What is avocado ranch dressing made of?

This dressing uses avocado, buttermilk, garlic and onion powder, plus fresh herbs like dill, chives and parsley. The avocado provides creaminess without mayo.

How do I make avocado ranch dairy-free?

Use a dairy-free buttermilk substitute: mix 1/2 cup non-dairy milk with 1/2 tablespoon lemon juice or vinegar, let it sit 10 minutes, then use in place of buttermilk.

Blackened shrimp on a platter with dip

Serving suggestions

Blackened shrimp are versatile. Try any of these serving ideas:

  • Toss the shrimp with mixed greens, veggies and avocado ranch for a bold salad.
  • Use the shrimp as a taco filling with pineapple salsa, pico de gallo, or chopped cabbage.
  • Build taco bowls over cilantro-lime rice with guacamole and roasted corn.
  • Serve as an easy weeknight meal alongside a simple corn and tomato salad or classic coleslaw.

Recipe notes

  • Prep tip: Make the blackened seasoning and avocado ranch up to a day ahead. Buying peeled and deveined shrimp saves prep time.
  • Control spiciness by adjusting the amount of blackened seasoning. Start with less if you prefer milder heat.
  • To make dairy-free buttermilk, combine 1/2 tablespoon lemon juice or vinegar with 1/2 cup non-dairy milk and let sit 10 minutes.
  • Leftovers of both shrimp and dressing will keep refrigerated for up to 3 days. Store separately for best texture.
Blackened shrimp dunked in avocado ranch

More shrimp recipes you’ll love:

  • Spicy lime grilled shrimp
  • Orange garlic shrimp
  • Pineapple shrimp skewers
  • Shrimp ceviche with mango and avocado salsa
  • Shrimp Louie salad

Did you try this recipe? If so, please leave a review below and tag the creator on social channels so others can find this recipe.

Blackened shrimp appetizer with avocado ranch dressing

Blackened Shrimp with Avocado Ranch Dressing

Servings: 8
Prep Time: 15 mins
Cook Time: 5 mins
Total Time: 20 mins
Juicy blackened shrimp paired with a creamy avocado ranch—an easy, flavorful appetizer that’s perfect for gatherings.

Ingredients

For the avocado ranch dressing:

  • 1 small avocado
  • 2 tablespoons fresh lime juice (or lemon)
  • 1/4 teaspoon onion powder
  • 1/4 teaspoon garlic powder
  • 1/2 cup buttermilk (or dairy-free buttermilk)
  • 2 tablespoons chopped parsley
  • 1 tablespoon chopped chives
  • 1 tablespoon chopped fresh dill
  • Salt and freshly ground black pepper to taste

For the blackened shrimp:

  • 2 lbs. raw jumbo shrimp, peeled and deveined (fresh or thawed)
  • 2–3 tablespoons blackened seasoning
  • 1 tablespoon olive oil
  • 2 tablespoons fresh lime juice (optional, for finishing)

Instructions

Prepare the avocado ranch dip:

  1. Combine avocado, lime juice, onion powder, garlic powder, buttermilk and chopped herbs in a food processor or blender.
  2. Blend until smooth, adding more buttermilk to reach the desired consistency. Season with salt and pepper and set aside.

Prepare the blackened shrimp:

  1. Toss the shrimp with 2–3 tablespoons blackened seasoning and salt until evenly coated.
  2. Heat olive oil in a large skillet over medium heat. Add shrimp in a single layer and cook 2–3 minutes per side until seared and cooked through.
  3. Remove from heat, toss with lime juice if desired, and serve immediately with the avocado ranch and lime wedges.

Notes

  • Prep the seasoning and dressing ahead of time to streamline serving.
  • Adjust seasoning amounts to control spiciness.
  • Leftovers keep refrigerated up to 3 days.

Nutrition (per serving, estimated)

Calories: 102 kcal, Carbohydrates: 13 g, Protein: 2 g, Fat: 6 g, Fiber: 4 g, Sodium: 1949 mg (estimate). Nutrition is an approximation for guidance only.

Course: Appetizers
Cuisine: American
Author: Marcie

Note: This post was originally published in January 2018. Photos and text have been updated for clarity and improved readability.