Spiced Mexican Tuna Steak With Avocado Salsa & Red Peppers

In this gorgeous and healthy tuna steak recipe, the fish is cooked with Mexican-inspired spices and served with sautéed red peppers and zesty fresh avocado and coriander salsa. This dish is Paleo, gluten-free, Whole30, and low-carb.

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Spiced Mexican Tuna Steak

In my quest to eat more fresh fish and expand my dinner repertoire beyond salmon, I decided to make a recipe with tuna.

This recipe features tuna steaks grilled with coriander seeds and lime zest brown butter (ghee or olive oil can also be used for a Whole30 version) and served over cumin and paprika-spiced onions and red peppers, and topped with zesty avocado salsa. 

It’s a popular recipe with my readers and is perfect for your weekly menu planning.

Which Tuna To Use In This Recipe?

Tuna steaks can be replaced with salmon, cod or any other fish fillets you prefer or can purchase. If using tuna, please read some notes below.

Tuna fish, regardless of its type, is considered overfished around the world. It doesn’t mean you should stop eating tuna altogether but you need to be able to make smarter choices so we can enjoy tuna in safe amounts for many generations to come.

Avoid the most vulnerable and threatened Bluefin tuna. Albacore tuna caught by pole is the best option, as is Skipjack tuna as they exist in almost every ocean in large shoals and reproduce quicker. Skipjack tuna is primarily used as ‘light tuna’ for canning. You can find out more about the best canned tuna to buy here. 

Tuna is high in protein and omega-3 fatty acids but some bigger, deeper water tuna varieties are known to contain higher mercury levels and should be eaten in small amounts. Stick to smaller, shorter lifespan tuna fish caught by pole-and-line, or trolling in certain regions where the supply is ample.

Find more information on tuna fish worldwide here and make sure to check out Good Fish Bad Fish for best Australian choices (it’s a great site with alternatives, cooking methods and so on).

My Simple Guide To Eating Tuna

• Buy tuna 1-2 times per month.
• Chat to your fishmonger and find out the type of tuna they’re selling and where it’s from.
• Educate yourself about the best type of tuna to purchase in your country.
• Make smarter choices when purchasing canned tuna.
• Tell your friends and family to do the same.

More Healthy Fish & Seafood Recipes

• Budget-Friendly Salmon Loaf with Cucumber Dill Salad
• Hawaiian Lomi-Lomi Salmon Salad
• Italian Prawn Arrabbiata with Zucchini Noodles
• Tuna & Sweet Potato Salad (Paleo, Whole3)
• Baked Japanese Salmon Balls

Full Recipe 

Find the full list of ingredients, instructions, and a nutritional breakdown below. If you have questions or cook this recipe, please let me know in the comments, and make sure to rate this recipe so it’s easy for others to find.

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