Keto Green Smoothie (Avocado & Spinach)

A keto green smoothie blends avocado, spinach, and unsweetened almond milk instead of banana or high-sugar fruit, landing at 2 g net carbs and 18 g fat per serving. This recipe makes two 12-ounce servings, is ready in 5 minutes with no cooking, and uses chia seeds and a splash of MCT oil to push the fat higher for a genuinely keto-ratio drink rather than a disguised fruit smoothie.

Many green smoothies use banana, mango or apple juice for sweetness, which can add 20 g or more of carbohydrate before the leafy greens. This version uses avocado for texture and provides a lower estimated net-carb amount. Compare the stated serving with an existing plan rather than treating it as universally suitable. Browse the keto food list or keto smoothies guide for other combinations.

Why does this smoothie work on keto?

The 2 g estimate starts with 9 g total carbohydrate per serving and subtracts 7 g of fiber from the listed ingredients. This common net-carb convention does not prove that the drink will produce ketosis or a particular glucose response.¹ Compare the serving estimate with a daily amount you already use. The macro guide explains why no calculator can decide exactly how the smoothie fits an individual's day.

What do you need to make a keto green smoothie?

Everything here is a whole-food ingredient — no protein powder or sweetener is required to make it work, though both are listed as optional add-ins.

• 1 1/2 cups unsweetened almond milk, chilled — 0 g net carbs; the liquid base. Unsweetened is essential — vanilla or original almond milk can add 5 to 7 g of sugar per cup.
• 1 cup packed fresh baby spinach — about 0.4 g net carbs; adds the green color and a mild vegetal flavor that avocado and lemon balance out.
• 1/2 medium ripe avocado, pitted and peeled — about 1.8 g net carbs; the fat and creaminess engine of the recipe.
• 1 tablespoon chia seeds — about 0.9 g net carbs; thickens the smoothie slightly as it sits and adds fiber and a little protein.
• 1 tablespoon MCT oil or melted coconut oil (optional) — 0 g net carbs; boosts fat further for a fuller keto ratio.
• 1 tablespoon fresh lemon juice — about 1 g net carbs; brightens the flavor and keeps the avocado from tasting flat.
• 1 to 2 teaspoons powdered erythritol or 4 to 5 drops liquid stevia (optional) — 0 g net carbs; add only if you want it sweeter, most people don't need it.
• 1/2 cup ice cubes — 0 g net carbs; for thickness and chill.
• Pinch of sea salt — rounds out the flavor and isn't optional for taste, even in a "sweet" drink.

How do you make a keto green smoothie?

Blend the liquid first, then the solids, then the ice, in five steps that take about 5 minutes total and need nothing beyond a standard blender. Adding liquid before the leafy greens and avocado keeps the blades from stalling on thick ingredients.

1. Add the liquid. Pour the almond milk into the blender first so the rest of the ingredients blend smoothly against the blades.
2. Add the rest. Add the spinach, avocado, chia seeds, MCT oil or coconut oil, lemon juice, sweetener, and salt.
3. Blend until smooth. Blend on high for 30 to 45 seconds until completely smooth and uniformly green, with no visible spinach flecks.
4. Add ice. Add the ice cubes and blend again for 15 to 20 seconds until thick and frosty.
5. Serve. Taste, adjust sweetness or thickness if needed, then pour into two glasses and serve immediately.

What are the nutrition facts for this smoothie?

Each serving has 200 calories, 18 g of fat, 3 g of protein, and 2 g of net carbs — roughly an 81% fat, 6% protein, 13% carb split by calories, which sits comfortably inside a standard keto macro target.

Nutrient	Per serving
Calories	200 kcal
Total fat	18 g
Protein	3 g
Total carbs	9 g
Fiber	7 g
Net carbs	2 g

Values are calculated from USDA figures for the raw ingredients above.¹² If you swap or omit an ingredient, recalculate the complete recipe from the revised food-composition or label values rather than assuming the numbers still hold.

How can you customize or boost this smoothie?

The base recipe flexes easily into a protein-forward meal, a nut-free version, or a fruitier drink depending on what you swap.

• Turn it into a meal: blend in one scoop (about 25 g) of unsweetened whey or collagen protein powder — roughly 100 to 120 calories and 20 to 24 g of protein, keeping net carbs under 4 g depending on the brand.
• Nut-free: swap the almond milk for unsweetened coconut milk beverage (carton, not canned); carb content is nearly identical.
• Frozen greens or avocado: both work well — skip the ice and blend a little longer, since frozen produce already thickens the drink.
• A little fruit: a small handful of frozen raspberries or blackberries adds tartness for roughly 2 to 3 additional net carbs; see our guide to keto-friendly fruits for other low-sugar options.

For other breakfast ideas, use the meal template builder. It does not accept custom recipes or include snack slots, so account for this smoothie separately.

How do you store a keto green smoothie?

This smoothie is best blended fresh and drunk within 10 to 15 minutes, since avocado begins to oxidize and separate once exposed to air. If you need to make it ahead, pour it into an airtight jar, press plastic wrap directly onto the surface, and refrigerate for up to 24 hours — expect some darkening and separation, which a quick re-shake fixes. It does not freeze well once blended; instead, freeze the spinach and avocado ahead of time and blend fresh.

Frequently Asked Questions

How many net carbs are in a keto green smoothie?

This recipe has 2 g of net carbs per serving, from avocado, spinach, chia seeds, and a splash of lemon juice. Total carbs are 9 g, but 7 g of that is fiber, which doesn't count toward net carbs.

Can you drink smoothies on keto?

Yes, as long as you build them around low-carb, high-fat ingredients like avocado, leafy greens, and unsweetened nut milk instead of banana, mango, or fruit juice, which can add 20 g or more of carbs per serving.

Is spinach keto-friendly?

Yes. One cup of raw spinach has only about 0.4 g of net carbs, making it one of the lowest-carb ways to add volume, color, and micronutrients to a keto smoothie.

Can you add protein powder to this smoothie?

Yes. One scoop of unsweetened whey or collagen protein powder adds about 20 to 24 g of protein and usually only 1 to 2 g of additional net carbs, turning the drink into a more filling meal replacement.

Can you use frozen spinach or avocado instead of fresh?

Yes, both work well. Using frozen produce also thickens the smoothie, so you can reduce or skip the ice cubes in the recipe.

Works cited

1. FoodData Central — Avocados, raw, all commercial varieties, U.S. Department of Agriculture — August 19, 2026 https://fdc.nal.usda.gov/
2. FoodData Central — Chia seeds, dried, U.S. Department of Agriculture — August 19, 2026 https://fdc.nal.usda.gov/
3. Ketogenic Diet — StatPearls, NCBI Bookshelf — August 19, 2026 https://www.ncbi.nlm.nih.gov/books/NBK499830/

Article history

1. August 23, 2026Updated
2. August 19, 2026First published