Prepare for a water bath: Start by boiling about 1-2 quarts of water (enough to reach halfway up your ramekins in a baking pan). This gentle cooking method is key for a silky-smooth custard!
Preheat your oven: Set your oven to 300°F (150°C).
Warm the cream: Pour the heavy cream into a saucepan and heat it over medium-high heat. Look for tiny bubbles forming around the edges, but be careful not to let it boil.
Whisk eggs and sweetener: In a separate bowl, combine the egg yolks, whole egg, and 1/2 cup Swerve confectioners. Whisk them together until completely smooth and well blended.
Temper the eggs gently: Once the cream is warm, remove it from the heat. Slowly pour the warm cream into the egg and Swerve mixture, whisking constantly as you pour. This step prevents the eggs from cooking too quickly.
Add vanilla and fill: Stir in the vanilla bean paste (or extract) until fully combined. Then, pour the custard mixture evenly into 6 ramekins. Place these filled ramekins inside a larger oven-safe baking pan.
Bake in water bath: Carefully pour the boiling water into the baking pan, making sure it comes about halfway up the sides of the ramekins. Gently transfer the pan to the preheated oven and bake for 45-50 minutes. The custard is perfectly done when it has a slight jiggle in the center.
Cool and chill: Remove the ramekins from the water bath and let them cool down at room temperature for 15 minutes. Afterward, place them in the fridge for at least 1-2 hours, or until thoroughly chilled and set.
Create the crisp top: Just before serving, evenly sprinkle the 3 tablespoons of Swerve granular over the top of all 6 chilled ramekins (this is about 1.5 teaspoons per ramekin). Use a kitchen torch to caramelize the Swerve until it's beautifully golden and bubbly. Let it sit for 2 minutes to harden into that delightful crispy shell. (No torch? You can use your broiler for 1-2 minutes, watching very closely to prevent burning!)