Preheat the Oven: Preheat your oven to 200°C (390°F). Line a baking tray with parchment paper or lightly grease it.

Prepare the Glaze: In a small bowl, mix together the wholegrain mustard, runny honey, and sea salt until well combined.

Glaze the Sausages: Place the cocktail sausages in a mixing bowl and pour the honey mustard glaze over them. Toss the sausages until they are evenly coated with the glaze.

Bake the Sausages: Arrange the glazed sausages on the prepared baking tray in a single layer, ensuring they are not touching each other. Bake for 20-25 minutes, turning halfway through, until the sausages are golden brown and sticky.

Serve: Remove the sausages from the oven and transfer them to a serving platter. Serve warm, either with toothpicks for easy snacking or as part of a buffet spread.