Step 1To roast the strawberries, preheat oven to 175 °C/ 350 °F. Quarter the strawberries and place them in a mixing bowl (no cutting needed if you are using frozen strawberries). Sprinkle them with 1 teaspoon of the Swerve, reserving the rest for the ice cream. Add the vanilla powder and stir through the strawberries until they’re well coated.