Keto Salmon with an Herb Crust from the Air Fryer
This keto salmon gets its crust from almond flour, parmesan and butter instead of breadcrumbs. In the air fryer it browns in 12 minutes while the salmon stays translucent inside - with no pan and no oven to preheat.
The key facts at a glance
- Time required: approx. 20 minutes - a fast main course for the evening.
- Only approx. 0.8 g net carbs and 34 g fat per serving.
- Ingredients: salmon fillet, almond flour, parmesan, butter, parsley, dill, garlic clove, lemon juice.
- Suits anyone who wants fish with a crust without using breadcrumbs.
Ingredients
Four servings of one fillet of approx. 150 g each; with a side dish that makes a complete main meal.
| Amount | Ingredient | Note | ||
|---|---|---|---|---|
| salmon fillet | 4 pieces of approx. 150 g, skinless | |||
| 4 pieces of approx. 150 g, skinless | ||||
| almond flour | finely ground | |||
| finely ground | ||||
| parmesan | freshly grated | |||
| freshly grated | ||||
| butter | approx. 2 tbsp, softened | |||
| approx. 2 tbsp, softened | ||||
| parsley | approx. 2 tbsp chopped, flat-leaf | |||
| approx. 2 tbsp chopped, flat-leaf | ||||
| dill | approx. 1.5 tbsp chopped | |||
| approx. 1.5 tbsp chopped | ||||
| garlic clove | finely grated | |||
| finely grated | ||||
| lemon juice | approx. 2 tsp | |||
| approx. 2 tsp | ||||
| salt | - | |||
| pepper | - | |||
How it is made
Stir the almond flour, parmesan, softened butter, chopped herbs, garlic and lemon juice into a spreadable paste. Pat the salmon fillets dry, spread the paste on top and cook at 180 degrees Celsius for about 12 minutes until the crust is golden brown.
Why salmon with an herb crust works well on keto
Salmon is one of the few protein sources that is also a meaningful fat source: around 13 g fat and 20 g protein per 100 g, with practically no carbs. For keto that makes it far less complicated than lean fish such as cod or pollock, which needs extra fat from a sauce. A considerable share of that fat consists of the long-chain omega-3 fatty acids EPA and DHA - oily sea fish is their most important dietary source, and two servings a week is a sensible target. A classic breadcrumb crust would buy this advantage at 15 to 20 g carbs per serving. Almond flour and parmesan supply binding and browning instead at approx. 0.8 g net carbs, and raise the fat per serving to about 34 g. The butter in the paste has a practical function here: it melts as the fish cooks, holds the crust together and stops the almond flour burning in the dry heat.
Source: NIH Office of Dietary Supplements: Omega-3 Fatty Acids
Hitting the right doneness in dry heat
Salmon forgives little: in an air fryer, two to three minutes separate translucent from dry. As a rule of thumb, count on about 11 to 13 minutes at 180 degrees Celsius for fillets of 150 g and 3 cm thick - thinner tail pieces need considerably less. More reliable than any time given is a look at the side of the fillet: as soon as the muscle segments visibly separate from one another, the fish is done. A probe thermometer at 50 to 52 degrees Celsius delivers the same result reproducibly. Nutrition values for the individual ingredients can be looked up in the FDDB nutrition database.
Source: FDDB nutrition database
Keeping net carbs predictable
At 0.8 g per serving the dish is practically carb-free - the entire figure sits in the 40 g of almond flour in the crust. That leaves the whole daily allowance for the side: steamed asparagus, green salad or zucchini fries from the same air fryer all fit without any trouble.
How do I serve and vary the salmon?
Asparagus with hollandaise, a leaf salad with balsamic dressing or zucchini fries all suit it. A lemon wedge on the plate is entirely enough as a sauce. In practice it pays to pat the fillets dry briefly before spreading: on wet fish the butter paste slides off sideways as it cooks and ends up in the basket instead of on the salmon.
Meal prep, prepping ahead and storing
The crust paste can be mixed up to 3 days in advance and kept in the fridge - let it come to room temperature for 15 minutes before use so it becomes spreadable. Cooked salmon keeps for about 2 days in the fridge and is very good cold on a salad. Reheating is delicate: 4 minutes at 160 degrees Celsius in the air fryer is enough, and any longer dries it out.
Dairy-free variation without parmesan and butter
For a dairy-free crust, replace the parmesan and butter with 25 g nutritional yeast and 30 ml olive oil. The crust turns out looser and less firm but still browns. Because the binding milk fat is missing, the paste should then be mixed firmer and pressed on more decisively.
Which tips help with salmon in the air fryer?
- Pat the fillets dry before spreading, or the crust slides off.
- Spread the crust on as a paste rather than scattering it on dry.
- Lay perforated parchment paper in the basket - salmon sticks otherwise.
- Start with 11 minutes at 180 degrees Celsius and only then check.
- The fish is done when the muscle segments visibly separate.
Nutrition values
| Nutrient | Per 100 g | Per serving | Keto context |
|---|---|---|---|
| Calories | approx. 258 kcal | approx. 453 kcal | A complete main meal from salmon fat, butter and parmesan. |
| A complete main meal from salmon fat, butter and parmesan. | |||
| Fat | approx. 20 g | approx. 34 g | Ideal for keto, with a meaningful share of omega-3 fatty acids. |
| Ideal for keto, with a meaningful share of omega-3 fatty acids. | |||
| Net carbs | approx. 0.5 g | approx. 0.8 g | Practically negligible; a breadcrumb crust would be 20 times higher. |
| Practically negligible; a breadcrumb crust would be 20 times higher. | |||
| Sugar | approx. 0.2 g | approx. 0.4 g | Only traces from the almond flour and lemon juice. |
| Only traces from the almond flour and lemon juice. | |||
| Protein | approx. 19 g | approx. 34 g | High; covers a large share of the daily requirement in one meal. |
| High; covers a large share of the daily requirement in one meal. | |||
| Salt | approx. 0.5 g | approx. 0.9 g | Moderate; the parmesan already brings salt, so season sparingly. |
| Moderate; the parmesan already brings salt, so season sparingly. | |||
Note: Nutrition values are estimated averages per 100 g and per serving and may vary depending on ingredients, brands, portion size, and preparation. They do not replace individual nutrition or medical advice.
FAQ
Is salmon allowed on keto?
Yes, salmon is among the best keto protein sources: around 13 g fat and 20 g protein per 100 g at practically zero carbs. Unlike lean fish it needs no additional fat source to fit the macro split.
How long does salmon take in the air fryer?
About 11 to 13 minutes at 180 degrees Celsius for a fillet of 150 g and 3 cm thick. Thinner tail pieces need 8 to 9 minutes. The fish is done when the muscle segments on the side visibly separate from one another.
Can I make the crust with coconut flour?
Better not. Coconut flour absorbs the butter completely and turns sandy instead of forming a cohesive crust. Almond flour is far better suited here, because its own fat keeps the paste supple.
Does the salmon suit weight loss on keto?
Yes. At 34 g protein and 34 g fat per serving the dish keeps you full for a long time without contributing carbs. To cut calories, halve the amount of crust - the salmon alone already supplies plenty of fat.