Keto Peanut Butter Smoothie
A thick, creamy peanut butter smoothie that tastes like a milkshake but lands at just 3.6g net carbs per serving. Blended with almond milk, full-fat coconut, and a scoop of protein, it's ready in 5 minutes flat for a filling, low-carb breakfast on the go.
Head of Nutrition · June 18, 2026
Nutrition per serving
Per serving · makes 2. Values are estimates; brands vary.
This creamy peanut butter smoothie delivers all the rich, milkshake-like flavor of a treat while keeping net carbs low enough for any keto morning. Blend it in five minutes for a protein-packed breakfast that actually keeps you full.
Ingredients
- 1 1/2 cups unsweetened almond milk
- 1/2 cup canned full-fat coconut milk
- 1/4 cup natural peanut butter (no added sugar)
- 1 scoop (about 30g) unsweetened vanilla whey or collagen protein powder
- 2 tablespoons heavy cream
- 1 tablespoon ground flaxseed
- 2 tablespoons powdered erythritol or monk fruit sweetener
- 1/2 teaspoon vanilla extract
- 1 pinch salt
- 1 cup ice cubes
Instructions
- 1
Add the almond milk, coconut milk, and peanut butter to a blender so the liquids sit at the bottom for easy blending.
- 2
Add the protein powder, heavy cream, ground flaxseed, sweetener, vanilla extract, and a pinch of salt.
- 3
Drop in the ice cubes and blend on high for 45 to 60 seconds, until completely smooth and thick.
- 4
Taste and adjust sweetness, then blend in a splash more almond milk if you prefer a thinner consistency.
- 5
Pour into two glasses and serve immediately.
Tips & notes
- Use only natural peanut butter whose label lists peanuts and salt — commercial brands often hide several grams of sugar per serving.
- Swap the whey for collagen or a plant-based pea protein to keep it dairy-free; the smoothie stays creamy thanks to the coconut milk and flax.
- Best enjoyed fresh, but you can store leftovers in a sealed jar in the fridge for up to 24 hours — shake well and add ice before drinking.
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Frequently asked questions
- How many carbs are in keto peanut butter smoothie?
- Each serving has 3.6g net carbs, 385 calories, 18g protein, and 31g fat. This recipe makes 2 servings.
- Can I make this peanut butter smoothie dairy-free?
- Yes. Replace the whey protein with collagen or pea protein and swap the heavy cream for an extra 2 tablespoons of full-fat coconut milk. It stays just as thick and creamy.
- Why is my keto smoothie not thick enough?
- Thickness comes from the ice, flaxseed, and full-fat coconut milk. Use a full cup of ice, don't over-thin with almond milk, and let it blend for the full 60 seconds. Adding a few extra ice cubes will thicken it instantly.
