Preheat the oven to 375 degrees F and line a large baking sheet with parchment paper.
Place the broccoli florets on the prepared baking sheet. Drizzle with 2 tablespoons of the avocado oil and toss to coat. Spread the broccoli to each side of the baking sheet to make room in the center for the salmon filets.
Place the salmon filets in the center. Coat each filet with 1 tsp each of avocado oil and spread to evenly coat.
Season the broccoli and the salmon evenly with the salt and pepper. Transfer to the preheated oven and roast until salmon is cooked through and easily flakes with a fork, 12 to 15 minutes.
Meanwhile, make the Harissa-Honey-Butter:
Heat a small skillet or saucepan over medium-low heat. Add the butter and let melt.
Add the honey, harissa, garlic, lemon zest, and cilantro and whisk until well combined. Cook, lightly simmering, to allow the flavors to meld and slightly thicken, about 5 minutes.
Serve it up:
To serve, divide the salmon and broccoli over steamed rice, if desired. Drizzle with the harissa-honey-butter and garnish with cilantro! Enjoy!