My favorite Keto Smoothie is full of coffee, peanut butter and a sneaky special ingredient that makes it ultra creamy! This low-carb smoothie recipe is like a caffinated keto fat bomb in a cup!
When you need an energizing, easy breakfast, keto smoothies are perfect for a tasty boost! With a few simple ingredient swaps, you can make a low-carb smoothie that tastes amazing and will keep you full for hours. Of course, I had to include coffee in it… I have it in my desserts, in my cocktails, you better believe I’ll turn it into a smoothie!
Keto smoothie recipes are hard to find because most smoothies are full of sugary fruits and juices. Avoid that sugar-crash-in-a-glass and instead let your body indulge in quality high-fat ingredients that will help you feel great all day. Bonus: All these ingredients are easy to find and keep on hand for a go-to healthy habit!
Why you’ll love it:
- Quick & easy to make – Forget cooking or reheating anything first thing in the morning. You can blend this smoothie together in 5 minutes with your eyes half closed.
- Can be healthy or indulgent – With just 1 or 2 add-ins, you can turn this into a green smoothie or something closer to a mocha milkshake! Whether you want to add more fiber, protein, or other vitamins and minerals, you can easily adjust this to become your favorite keto smoothie.
- Perfect way to keep you on track – If you’re new to the keto diet, finding a simple, low-carb breakfast that is easy to fit into your routine will help you build your keto lifestyle!
Keto Smoothie Ingredients
Here’s a quick overview of what you’ll need for this easy low-carb smoothie recipe. You will find exact measurements in the printable recipe card at the bottom of the page.
- Coffee – I used my favorite cold brew coffee, but you can easily just brew a cup and let it cool off first. I have not tried this with any substitutions.
- Frozen Avocado – This can be mashed, pureed, or cubed, whatever is convenient. You can use fresh avocado, but you’ll want to add ice to help make your smoothie cold.
- Full-Fat Coconut Milk – You want the canned coconut milk, unsweetened. Give it a good shake before opening to get the best consistency. You could use coconut cream, heavy cream, or a low-carb Greek yogurt if you prefer. You can use unsweetened almond milk, but it will make the smoothie quite thin.
- Nut or Seed Butter – I used peanut butter, but an almond butter (or pecan, cashew, or macadamia) would be great as well. Sunflower butter or even tahini are good nut-free options as well.
- Monk Fruit Sweetener – You could also use Swerve, Stevia, or another alternative sweetener if you prefer. If you’re sensitive to the erythritol in a lot of alternative sweeteners, try a few drops of this liquid monk fruit instead.
- Ground Cinnamon & Vanilla Extract – These add a great, full-bodied flavor that we loved! Feel free to skip, substitute, or adjust these how you’d like without worrying about much effect on the texture of the smoothie.
- Optional: Unsweetened Cocoa Powder – I sprinkled a bit on top for a pretty garnish, but sometimes I add a scoop into the blender for a chocolate smoothie! This isn’t necessary, just adds a nice touch.
How to Make a Keto Smoothie
This recipe is incredibly easy and requires no cooking at all! You just need a blender, and you’re good to go. Simply pour all of the ingredients into your blender and give it a whirl! When the mixture is smooth and creamy with all the ingredients well mixed, you can pour into a glass and serve! Even better–Use a blender with a to-go cup to save time and dishes!
I know it sounds a bit odd, putting avocado in a smoothie. But it really doesn’t taste like anything, so this recipe just tastes like a coffee peanut butter smoothie! Want to make it extra special for a birthday, a big interview, or a special occasion? Add some homemade espresso whipped cream!
What to serve with keto smoothies
I’ll often have this smoothie on its own (or with some Grain Free Granola I tossed in my bag), but if it’s going to be a really long day, I love warming up a Keto Sausage and Biscuit just in case I have to skip lunch! If you love a sweet treat in the morning, consider adding a Keto Blueberry Muffin or a Pumpkin Cinnamon Roll instead. For those who prefer one big meal to get them through the day, get your protein from this Steak Omelet, add more fiber with this Swiss Chard, and enjoy a Keto Biscuit on the side!
Can you make smoothies ahead of time?
The best keto smoothies are super chilled and creamy. The best way to make this happen is to make the smoothies fresh with at least one frozen ingredient. The frozen avocado blends into a super cold, creamy mixture that helps thicken the smoothie without watering it down like ice would. Freshly blended smoothies have the best taste, texture, and appearance.
Healthy, Low-Carb Smoothie Add-Ins
There are so many healthy additives you could use in this easy smoothie! For the smoothest blend, consider blending your additives with half of the coffee FIRST, then adding the remaining ingredients and blending again. This can help prevent a gritty texture from the fibers, powders, etc.
- Greens – Spinach is a popular addition to smoothies because it has a mild flavor, and you can get it processed super small in the blender. Kale, collards, celery, and other greens can also work well, but they may require a little extra blending and may have a stronger flavor. Blend them with half of the coffee until smooth before adding the remaining ingredients and blending again.
- Seeds – Chia seeds have 0 net carbs, 5 grams of fat, 3 grams of protein, and 75 calories in 1 tablespoon. Adding 1 tablespoon of hemp seeds adds 0 net carbs, 4 grams of fat, and 3 grams of protein for about 50 calories. For the best texture, soak them in half the coffee first for about 5 minutes.
- Supplements – Protein powder, collagen powder, superfood powders, and other products meant to add specific vitamins and minerals are perfect for smoothies. This smoothie already has a ton of healthy fats, so you can probably skip the MCT oil.
If you love this keto breakfast, you have to try these easy recipes!
- Keto Lemon Chia Cheesecake Parfaits – It tastes like dessert but is an excellent no-cook keto breakfast! Each one has under 4 net carbs and is easy to make ahead of time.
- Bacon Keto Biscuits – These are perfect for meal prepping, freezing, and then enjoying on-the-go after a quick reheat! Works for breakfast or lunch, just 2 net carbs apiece.
- Air Fryer Denver Eggs – When you want a fancy omelet but don’t have the time, this easy ramekin recipe is the perfect compromise!
- Sausage Stuffed Chaffles – Seriously, this is SO easy! There’s tons of protein and fats to keep you fueled and energized throughout your day.
- Keto Sausage Egg & Cheese Bites – A whole breakfast rolled up in neat little baked breakfast balls! These low-carb bites are freezable and reheat perfectly for a great meal prep option.
Want more keto coffee? My three top favorites are my Peppermint Mocha Frappuccino, a low-carb copycat of Starbucks’ Frappuccino, and this Keto Caramel Frappuccino. Check this recipe roundup for even more low carb coffee recipes!
Keto Smoothie FAQs
The ketogenic diet is all about reducing your sugar intake or anything that could cause a blood sugar glucose spike, then fueling your body with healthy fats. Most smoothies include tons of fruit, meaning they have way too many grams of carbs to be keto-friendly. While some berries (strawberries, raspberries, blackberries, blueberries) can work with a keto diet, most fruits contain too many sugars. This keto smoothie avoids sugary fruits and blends avocado with coffee, peanut butter, and coconut milk for a thick smoothie at just 5 net carbs each.
No, MCT oil or keto supplements are not a necessary for the keto diet. The main benefit of MCT oil is the added boost of fat, but we naturally get great, high-quality sources of fat in the avocado, coconut milk, and peanut butter in this smoothie.
There are many peanut butters out there that add in sugar, corn syrup, or other sweeteners, making them a poor ingredient in a keto diet. However, there are tons of peanut butters that keep carbs low and ingredients simple, so you just have to check the label.
My Favorite Keto Smoothie
- Add all ingredients to a blender and blend and blend until smooth. Dust with cocoa powder if desired. Drink up!
- This smoothie isn’t overly sweet, but you can add as much monk fruit sweetener as you wish!
- You can’t taste the avocado, and it has good caffeine content for a morning smoothie or afternoon pick-me-up!
- You can also sub in ice instead of avocado but the result is a less creamy smoothie. The avocado makes this one extra creamy!
- This recipe makes 1 smoothie, and it has 5 net carbs.