Keto Watermelon Sherbet (Sugar-Free, Low Carb, Creamy & Refreshing)

Nothing says summer like watermelon—juicy, refreshing, and naturally hydrating. But watermelon on keto? In moderation, yes! And with the right balance of fats and sweeteners, you can turn this summertime staple into a low-carb, creamy watermelon sherbet that fits beautifully into a ketogenic lifestyle.

This recipe uses Keystone Pantry Allulose, a low-glycemic sweetener that delivers a sugar-like texture and taste without the carbs or blood sugar spike. Let’s dive into the ingredients and how they work together to create the perfect frozen treat.

🥄 Ingredients & What Each One Does

🍉 2 cups fresh watermelon, diced and deseeded

• Purpose: Watermelon is the star of the show! It brings natural sweetness, vibrant color, and high water content. Even though watermelon contains natural sugars, 2 cups divided across servings keeps the carb count reasonable.

• Why we’re using it: It’s hydrating and rich in lycopene and vitamin C. Plus, that fresh watermelon flavor just screams summer.

🧊 1 tablespoon fresh lime juice

• Purpose: Adds brightness and balances the natural sweetness of the watermelon.

• Why we’re using it: The acidity cuts through the creaminess and enhances the fruity notes, making the sherbet taste more refreshing.

🍦 1 cup heavy whipping cream

• Purpose: Adds richness, creaminess, and fat content needed to make this sherbet keto-friendly.

• Why we’re using it: Keto diets thrive on healthy fats. Heavy cream gives the sherbet body and smoothness without the need for added stabilizers.

🥥 1/2 cup full-fat coconut milk (canned)

• Purpose: Helps emulsify the mixture while adding a subtle tropical flavor.

• Why we’re using it: Coconut milk improves texture and adds dairy-free creaminess. The medium-chain triglycerides (MCTs) in coconut are also great for keto energy metabolism.

🍬 1/2 cup Keystone Pantry Allulose

• Purpose: Provides sweetness and lowers the freezing point of the sherbet for a scoopable texture.

• Why we’re using it: Allulose tastes and behaves like sugar, but it has zero net carbs and doesn’t raise blood glucose levels. Unlike erythritol, it doesn’t leave a cooling aftertaste, and it prevents ice crystals from forming.

🍃 1/4 tsp salt

• Purpose: Enhances overall flavor and balances sweetness.

• Why we’re using it: A pinch of salt makes all the flavors pop, especially in fruity desserts.

🥄 1 tsp vanilla extract

• Purpose: Adds depth of flavor and aromatic warmth.

• Why we’re using it: Vanilla rounds out the flavor and adds a subtle creaminess that blends well with watermelon.

🥣 Instructions

1. Prepare the Watermelon Base
   In a blender or food processor, blend the diced watermelon until completely smooth. You should have around 1½ cups of puree.

2. Strain the Mixture (Optional)
   If you prefer a super smooth texture, strain the watermelon puree through a fine mesh sieve to remove pulp. This step is optional but recommended.

3. Combine Ingredients
   In a large mixing bowl, whisk together the watermelon puree, lime juice, heavy cream, coconut milk, Keystone Pantry Allulose, salt, and vanilla extract until well combined.

4. Chill the Mixture
   Cover and chill in the refrigerator for at least 2 hours, or until very cold. This helps improve the texture when freezing.

5. Churn in Ice Cream Maker
   Pour the chilled mixture into your ice cream maker and churn according to manufacturer’s instructions (usually 20–25 minutes) until it reaches a soft-serve consistency.

6. Freeze Until Firm
   Transfer the sherbet to a lidded container and freeze for 2–4 hours to firm up. Let sit at room temperature for 5–10 minutes before scooping.

🍧 Tips for Best Results

• No ice cream maker? Pour the mixture into a shallow pan, freeze, and stir every 30 minutes for 3–4 hours until creamy.

• Want more tartness? Add an extra squeeze of lime juice or even some lemon zest.

• Want it pinker? A few fresh raspberries or a touch of beet juice can enhance color naturally without altering the flavor too much.

⚖️ Nutrition Info (per ½ cup serving – makes approx. 6 servings)

Estimates only—based on general product nutrition values

• Calories: 160

• Fat: 15g

• Net Carbs: 3g

• Protein: 1g

• Fiber: 0g

• Sugars: 2g (naturally occurring from watermelon)

🛒 About the Sweetener: Keystone Pantry Allulose

Unlike other sugar alternatives, allulose behaves like real sugar in cooking and freezing. It caramelizes, dissolves well, and keeps frozen treats soft and scoopable. That’s why we choose Keystone Pantry Allulose—it’s high quality, keto-friendly, and perfect for recipes that demand sugar-like performance without the carbs.