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Keto Garlic Mustard Shrimp & Salmon Traybake

4.4 stars, average of 21 ratings

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Tray bakes are the perfect way to keep keto simple and easy. The best thing about them is that there is little cleanup afterwards!

This is a great low-carb dinner option for busy weeknights. Tender salmon, juicy shrimp and crunchy vegetables drizzled in garlic, mustard and lemon sauce. You can even prep this meal in single-serve foil packs!

We all have different dietary needs so it's only natural that you may need to adjust the macros in this recipe. You can make any adjustments directly in the KetoDiet App by cloning any of the recipes from my blog and customizing them to fit your macros and preferences.

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Hands-on Overall

Serving size 1 salmon fillet with shrimp & vegetables

Allergy information for Keto Garlic Mustard Shrimp & Salmon Traybake

✔  Gluten free
✔  Dairy free
✔  Egg free
✔  Nut free
✔  Pork free
✔  Avocado free
✔  Coconut free
✔  Beef free

Nutritional values (per serving, 1 salmon fillet with shrimp & vegetables)

Net carbs8.3 grams
Protein43 grams
Fat48.5 grams
Calories651 kcal
Calories from carbs 5%, protein 27%, fat 68%
Total carbs11.7 gramsFiber3.4 gramsSugars6.4 gramsSaturated fat15.8 gramsSodium1,119 mg(49% RDA)Magnesium95 mg(24% RDA)Potassium1,173 mg(59% EMR)

Ingredients (makes 2 servings)

  • 1 medium zucchini, sliced (200 g/ 7.1 oz)
  • 1 medium red, yellow or orange bell pepper, sliced (120 g/ 4.2 oz)
  • 1/2 small red onion, sliced (30 g/ 1.1 oz)
  • 8 large raw shrimp, deveined (100 g/ 3.5 oz)
  • 2 fillets salmon (150 g/ 5.3 oz)
  • chopped basil or parsley and lemon wedges, to serve
Garlic mustard & lemon sauce:
  • 3 tbsp extra virgin olive oil (45 ml)
  • 3 tbsp melted butter or ghee (45 ml)
  • 2 tbsp lemon juice (30 ml)
  • 1 tbsp wholegrain mustard (15 g/ 0.5 oz)
  • 2 cloves garlic, minced
  • 2 tsp dried oregano
  • 1/2 tsp sea salt
  • 1/4 tsp black pepper


  1. Preheat oven to 220 °C/ 430 °F (fan assisted), or 240 °C/ 465 °F (conventional). Prepare all the vegetables. Slice the zucchini into about 1 cm (1/2 inch) rounds. Slice the bell pepper and onion. Devein the shrimp (you'll need about 8 large shrimp). Keto Garlic Mustard Shrimp & Salmon Traybake
  2. To make the sauce, combine the olive oil, melted butter (or ghee or more olive oil if you are dairy-free), lemon juice, garlic, mustard, oregano, salt and pepper. Keto Garlic Mustard Shrimp & Salmon Traybake
  3. Place the zucchini, bell peppers and onion in a tray. (You can line it with baking foil for easy clean up.) Pour half of the sauce over the vegetables and toss to combine.
  4. Top with the salmon fillets and then top the salmon with shrimp and the remaining sauce.
  5. Cover with baking foil and bake for about 20 minutes. Remove the foil and broil on high for about 5 minutes.
    Note: If you worry about the shrimp getting too dry, add them on top for the last 3 to 5 minutes of the baking process. Keto Garlic Mustard Shrimp & Salmon Traybake
  6. Remove from the oven and let it cool down for a few minutes before serving. Optionally, sprinkle with fresh herbs (basil or parsley) and lemon wedges and serve while still warm. Keto Garlic Mustard Shrimp & Salmon Traybake

Ingredient nutritional breakdown (per serving, 1 salmon fillet with shrimp & vegetables)

Net carbsProteinFatCalories
Zucchini (summer squash, courgette)
2.1 g1.2 g0.3 g17 kcal
Peppers, red bell, fresh
2.3 g0.6 g0.2 g18 kcal
Onion, red, fresh
1 g0.2 g0 g6 kcal
Prawns, shrimp (raw, peeled)
0.2 g7.2 g0.4 g33 kcal
Salmon, raw
0 g32.4 g8.9 g219 kcal
Olive oil, extra virgin
0 g0 g20.3 g179 kcal
Butter, unsalted, grass-fed
0 g0.2 g17.3 g153 kcal
Lemon juice, fresh
0.8 g0 g0 g3 kcal
Mustard, wholegrain
0.5 g0.7 g1 g14 kcal
Garlic, fresh
0.9 g0.2 g0 g4 kcal
Oregano, dried
0.2 g0.1 g0 g2 kcal
Salt, sea salt
0 g0 g0 g0 kcal
Pepper, black, spices
0.1 g0 g0 g1 kcal
Basil, fresh
0.1 g0.2 g0 g1 kcal
Total per serving, 1 salmon fillet with shrimp & vegetables
8.3 g43 g48.5 g651 kcal

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Martina Slajerova
Creator of

Martina Slajerova

I changed the way I ate in 2011, when I was diagnosed with Hashimoto’s, an autoimmune disease that affects the thyroid. I had no energy, and I found it more and more difficult to maintain a healthy weight.

That’s when I decided to quit sugar, grains, and processed foods, and to start following a whole-foods-based ketogenic approach to food.

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Comments (5)


Very good dish but next time I would prepare the shrimp separately - the few minutes under the broiler dry them out.  Overall I would use this recipe again.  Thank you for the post.

Thank you Jan, that's a good point. I think that the foil helps prevent drying out as mine were perfect but I agree that it may be better to add then just for the last few minutes when the foil is removed. I'll add a note. Thanks again!

Just finished this.  I was looking for something quick, easy and different to do with salmon.  This hit every point along with a great flavor.  Even my husband who does not eat low carb loved it!!  I made roasted potatoes with oregano and lemon for him on the side, but this was perfect for me.  Thank you!!

Thank you so much Dorothy, I'm glad you enjoyed!