If roasting, preheat your oven to 325°F (165°C). Line a baking sheet with parchment paper.

Measure all nuts and seeds and place them into a large mixing bowl. Stir to combine evenly.

If roasting, drizzle lightly with olive oil or avocado oil. Add sea salt and optional cinnamon or sweetener. Mix well to coat evenly.

Spread the mixture in a single layer on the baking sheet. Roast for 12–15 minutes, stirring halfway through, until lightly golden and fragrant. Watch closely to prevent burning.

Remove from the oven and let the trail mix cool completely. It will become crunchier as it cools.

Once cooled, stir in coconut flakes, chia seeds, or flaxseeds if using.

Transfer the keto trail mix to airtight containers or jars.