In a small saucepan, combine the blueberries with the sugar substitute and lemon juice. Stir over medium heat until the sugar has dissolved and the blueberries have burst and turned into a saucy consistency. This should take about 5 minutes. Allow to cool for 5 minutes.
Pour the blueberry mixture, unsweetened almond milk, protein powder, and guar gum into a small blender and blend together until all ingredients are well combined. Pour the mixture into the Ninja Creami pint container.
Freeze on a level surface for 24 hours. Your freezer should be between 9 and -7 degrees Fahrenheit. To avoid getting a bump on the top of the frozen mixture, freeze with the lid off of the container.
Process the Ice Cream
After 24 hours, remove the pint container from the freezer.
Place the pint container into the outer bowl of the Ninja Creami and then process on "LITE ICE CREAM."
If the ice cream is dry or crumbly looking (like sand), pour in a tablespoon or two of unsweetened almond milk and then re-spin. If the ice cream looks like little balls of ice cream, respin without adding liquid. You may have to repeat this process a couple of times.
Dig a well down the center of the ice cream and pour in fresh blueberries. Process on mix-ins.
Remove the pint from the machine and enjoy!
Video
Notes
Why are the blueberries cooked before adding them to the ice cream base?Cooking fruit with sweetener helps to bring out the fruit flavors, adds sweetness and intensifies the flavor.Essentially, you are making a jam or pie filling when you cook the berries. It's a little extra work but it makes a huge difference in the final product.Does the Swerve sugar substitute taste like fake sugar?Of all the sugar substitutes that I have used, I prefer the Swerve Allulose blend.I can't tell the difference in flavor and there's no weird texture.It's great too because it measures the same as sugar does.If you use a different sugar substitute, you may need to adjust the amount used based on the conversion for that substitute.