Preheat your oven to 400°F (200°C).

Wash your baby potatoes under cold water to remove any dirt and place them in a large mixing bowl.

In a separate bowl, whisk together the olive oil, honey, Dijon mustard, whole grain mustard (if using), minced garlic, salt, pepper, and lemon juice until smooth.

Add the washed potatoes to the bowl with the honey mustard mixture and toss gently until evenly coated.

Line a baking sheet with parchment paper and arrange the coated potatoes in a single layer.

Roast the potatoes in the preheated oven for about 25–30 minutes, turning halfway through.

Remove from the oven and allow the potatoes to cool for a few minutes.

Transfer the roasted potatoes to a serving dish and sprinkle with chopped parsley before serving.