This Blackberry Collagen Keto Smoothie is the kind of quick breakfast or snack that makes eating low-carb feel easy. It’s creamy, lightly sweet, and bursting with fresh berry flavor—without the sugar crash. You’ll get a boost of protein from collagen and healthy fats that keep you satisfied.
Even better, it blends up in minutes and uses simple ingredients you probably already have. Whether you’re keto, low-carb, or just want a smarter smoothie, this one checks all the boxes.
Blackberry Collagen Keto Smoothie - Creamy, Low-Carb, and Protein-Packed
Ingredients
- 1 cup frozen blackberries (or fresh with a few ice cubes)
- 1 scoop unflavored collagen peptides (typically 10–20 g protein)
- 3/4 cup unsweetened almond milk (or coconut milk for extra creaminess)
- 2 tablespoons full-fat coconut cream (or 1 tablespoon almond butter)
- 1 teaspoon MCT oil (optional, for extra energy and satiety)
- 1/2 teaspoon vanilla extract (optional but adds warmth)
- Pinch of cinnamon (optional, for depth and a hint of spice)
- Sweetener to taste (stevia, monk fruit, or erythritol—start small)
- Ice cubes (3–4 if using fresh berries or if you like a thicker texture)
- Pinch of sea salt (optional, to enhance flavor)
Instructions
- Add liquids first: Pour the almond milk into your blender. This helps the blades move smoothly and prevents clumping.
- Layer the powders: Sprinkle in the collagen peptides so they dissolve evenly.
- Add fats and flavors: Spoon in the coconut cream (or almond butter), add MCT oil, vanilla, cinnamon, and a tiny pinch of salt.
- Finish with fruit and ice: Add the frozen blackberries. If using fresh berries, toss in a few ice cubes to chill and thicken.
- Blend until creamy: Start on low, then increase to high for 30–45 seconds, or until silky and uniform. Scrape the sides if needed.
- Sweeten to taste: Blend in your preferred keto sweetener a little at a time. Taste and adjust.
- Serve immediately: Pour into a chilled glass for the best texture, or top with a few extra berries and chia seeds.
Why This Recipe Works
- Low-carb berries, big flavor: Blackberries are naturally lower in sugar compared to many fruits, so you get the bright, jammy taste with fewer carbs.
- Collagen for clean protein: Unflavored collagen peptides dissolve smoothly, add no weird taste, and support hair, skin, nails, and joints.
- Healthy fats for fullness: Coconut milk, almond butter, or MCT oil provide fats that help keep you full and steady your energy.
- Creamy texture without bananas: A mix of frozen berries and full-fat milk alternatives creates a rich, milkshake-like feel—no high-carb thickeners needed.
- Customizable sweetness: A touch of keto-friendly sweetener brings out the berries without spiking your blood sugar.
What You’ll Need
- 1 cup frozen blackberries (or fresh with a few ice cubes)
- 1 scoop unflavored collagen peptides (typically 10–20 g protein)
- 3/4 cup unsweetened almond milk (or coconut milk for extra creaminess)
- 2 tablespoons full-fat coconut cream (or 1 tablespoon almond butter)
- 1 teaspoon MCT oil (optional, for extra energy and satiety)
- 1/2 teaspoon vanilla extract (optional but adds warmth)
- Pinch of cinnamon (optional, for depth and a hint of spice)
- Sweetener to taste (stevia, monk fruit, or erythritol—start small)
- Ice cubes (3–4 if using fresh berries or if you like a thicker texture)
- Pinch of sea salt (optional, to enhance flavor)
Step-by-Step Instructions
- Add liquids first: Pour the almond milk into your blender. This helps the blades move smoothly and prevents clumping.
- Layer the powders: Sprinkle in the collagen peptides so they dissolve evenly.
- Add fats and flavors: Spoon in the coconut cream (or almond butter), add MCT oil, vanilla, cinnamon, and a tiny pinch of salt.
- Finish with fruit and ice: Add the frozen blackberries.
If using fresh berries, toss in a few ice cubes to chill and thicken.
- Blend until creamy: Start on low, then increase to high for 30–45 seconds, or until silky and uniform. Scrape the sides if needed.
- Sweeten to taste: Blend in your preferred keto sweetener a little at a time. Taste and adjust.
- Serve immediately: Pour into a chilled glass for the best texture, or top with a few extra berries and chia seeds.
How to Store
- Short-term: Keep in a sealed jar in the fridge for up to 24 hours.
Shake before drinking.
- Meal prep: Blend without ice, store in individual jars, and add ice or a splash of milk before serving to refresh the texture.
- Freezer option: Freeze in silicone smoothie molds or ice cube trays. Thaw overnight in the fridge and blend with a bit more milk to bring it back to life.
Benefits of This Recipe
- Keto-friendly and low in net carbs: Blackberries are fiber-rich, helping keep net carbs in check.
- Protein support from collagen: Collagen is easy on the stomach and can support joints, hair, skin, and nails.
- Sustained energy: Healthy fats from coconut cream, almond butter, and optional MCT oil help keep you full and focused.
- Antioxidants galore: Blackberries are packed with vitamin C and anthocyanins that support overall wellness.
- No dairy required: Perfect if you’re avoiding lactose but still want that creamy, smoothie-bar texture.
Pitfalls to Watch Out For
- Over-sweetening: Keto sweeteners can taste stronger than sugar. Start with less and build up.
- Too many berries: It’s easy to go heavy-handed.
Measure to keep carbs in check.
- Clumpy collagen: Add liquids first and sprinkle collagen in, or pulse briefly before going full speed.
- Separation in the fridge: Natural fats may separate over time. A quick shake or re-blend fixes it.
- Texture too thin: Use frozen berries, a few ice cubes, or an extra spoon of coconut cream to thicken.
Alternatives
- Berry swaps: Use raspberries or strawberries for a similar carb profile. Blueberries are tasty but slightly higher in carbs—use a smaller amount.
- Milk options: Try unsweetened macadamia milk or full-fat canned coconut milk for extra richness.
- Flavor twists: Add lemon zest for brightness, cocoa powder for a chocolate-berry vibe, or a few mint leaves for freshness.
- Protein variations: If you’re not using collagen, a clean, low-carb whey isolate or egg white protein can work.
Adjust liquid as needed.
- Thickeners: For an ultra-thick shake, add 1 teaspoon chia seeds or 1/4 teaspoon xanthan gum and blend well.
FAQ
Is this smoothie actually keto?
Yes. When portioned correctly, blackberries are low in net carbs. Combined with unsweetened milk alternatives, collagen, and healthy fats, this smoothie fits well into a keto or low-carb plan.
Can I use fresh blackberries instead of frozen?
Absolutely.
Just add a few ice cubes to keep it cold and thick. Frozen berries also help with creaminess, so adjust coconut cream if needed.
What kind of collagen should I use?
Use unflavored collagen peptides from a reputable brand. They dissolve easily and won’t affect the taste.
Marine or bovine collagen both work well.
Do I need MCT oil?
No, it’s optional. It can boost satiety and mental energy for some people, but the smoothie is still satisfying with coconut cream or almond butter alone.
How can I make it sweeter without adding carbs?
Use a keto-friendly sweetener like liquid stevia, monk fruit drops, or erythritol. Start with a small amount, blend, taste, and adjust.
Can I add greens?
Yes.
A handful of baby spinach blends in easily and won’t overpower the flavor. If you add kale, blend longer for a smooth texture.
What if I want more protein?
Add an extra half scoop of collagen or supplement with a low-carb protein powder. You may need a splash more milk to balance the thickness.
Will this keep me full until lunch?
Most people find the combination of protein, fiber, and healthy fats keeps them satisfied for several hours.
If you’re very active, pair it with a handful of nuts or hard-boiled eggs.
Final Thoughts
This Blackberry Collagen Keto Smoothie is a simple, go-to blend that tastes indulgent while staying smart on carbs. It’s quick to make, endlessly flexible, and easy to tailor to your taste. Keep a bag of frozen blackberries and a tub of collagen on hand, and you’ll always have a fast, nourishing option ready to go.
When you want something creamy, refreshing, and genuinely satisfying, this smoothie delivers every time.