Preheat oven to 220°C (425°F). Line your sheet pan with parchment paper.
In a bowl, whisk olive oil, lemon juice, garlic, mustard, thyme, paprika, salt, and pepper.
Toss the halved potatoes in half of the marinade and spread them on the sheet pan.
Roast for 15 minutes until lightly golden.
Add asparagus and plant-based salmon to the same pan.
Drizzle the remaining marinade over everything and toss gently.
Roast for another 10–12 minutes until the veggies are tender and the “salmon” turns golden.
Garnish with extra lemon slices or fresh dill.
Serve hot and pretend you spent hours making it.
Bonus points if you enjoy it with a glass of chilled white wine.