You do not need yogurt for a thick, creamy banana smoothie. The banana itself does most of the work — a ripe banana blended with milk is already halfway to milkshake territory. The recipe below uses regular milk, and every variation after it works for dairy-free, vegan, or just whatever is in your fridge.

The base recipe (no yogurt, no fuss)

For one large smoothie:

1 large ripe banana (frozen is even better)
3/4 cup milk — dairy or any plant milk
1/2 teaspoon vanilla extract (optional)
A small pinch of salt — it sounds odd but it makes the banana taste more like itself
2 or 3 ice cubes if the banana is not frozen

Blend everything for 30 to 45 seconds until completely smooth. Done. It is thick enough to need a wide straw but still pours.

Why it works without yogurt

Yogurt does two things in a smoothie: it adds creaminess and it adds body. A ripe banana covers both — the starches and pectin in banana give the drink its texture. Using a frozen banana makes the smoothie thicker and colder without watering it down the way a pile of ice does. If you have bananas going soft on the counter, peel them, break them into chunks, and freeze them on a plate before bagging them.

Dairy-free versions that still taste rich

Oat milk: the closest to dairy milk in creaminess and the easiest swap.
Soy milk: more protein, neutral flavor.
Almond milk: lighter body — use a frozen banana or add a spoon of nut butter to keep it thick.
Coconut milk (carton): adds a light tropical note; canned coconut milk works too but use just 2 or 3 tablespoons thinned with water.

For a completely milk-free version, use water or fresh pineapple juice as the liquid and lean on the frozen banana plus a spoonful of nut butter for body.

Getting the texture right

Too thick to blend: add liquid a tablespoon at a time. Frozen bananas need more liquid than fresh.
Too thin: more banana, a few ice cubes, a spoon of oats, or a tablespoon of chia seeds — give chia five minutes to thicken.
Gritty: blend longer, especially with oats or chia. A weak blender needs an extra 30 seconds.
Separates quickly: it was probably under-blended or made with watery ingredients. Blend an extra 15 seconds and drink soon.

Variations worth keeping

Peanut butter banana: add 1 tablespoon peanut butter. This is the most satisfying version and the one most people settle on.
Banana coffee smoothie: replace half the milk with cooled coffee.
Chocolate banana: add 1 tablespoon cocoa powder; a date or a drizzle of honey rounds it out.
Green banana: add a handful of spinach — you will not taste it, but see the green smoothie guide if leafy smoothies are the goal.
With berries: a handful of strawberries makes it a strawberry banana smoothie.

What to use instead of yogurt

If the recipe you found assumes yogurt, these are the substitutes ranked by how close they get:

Extra banana: the simplest — yogurt's creaminess is mostly covered already.
Nut butter: a tablespoon adds richness and makes it more filling.
Rolled oats: 2 tablespoons, blended well — thickens and adds staying power.
Silken tofu: 2 to 3 tablespoons disappears into the flavor and adds protein.
Dairy-free yogurt: coconut, soy, or oat yogurts swap 1:1 if you just need it vegan.

Making it a meal

On its own, a banana smoothie is a good snack but a light breakfast. To make it hold you until lunch, add two of: 2 tablespoons oats, 1 tablespoon nut butter, a spoonful of chia seeds, or a serving of protein powder. Each raises the calories and the staying power noticeably.

Common questions

Fresh or frozen banana? Both work; frozen makes it thicker and colder without ice. Spotty, ripe bananas are sweeter and blend smoother than firm yellow ones.

Can I use water instead of milk? Yes — the smoothie gets thinner and less creamy, so lean harder on the frozen banana or add nut butter for body.

Can I make it without any liquid? Not really — the blades need liquid to catch. Even 1/4 cup gets a stubborn blender going.

Make-ahead notes

A banana smoothie is best right after blending. If you need to hold it, keep it in a sealed jar in the fridge for up to a day — it will brown slightly and separate; a quick shake or re-blend fixes the look, if not the color. It also freezes well: freeze in a jar with headspace and thaw in the fridge overnight for grab-and-go mornings.

The whole recipe is really a ratio: one banana to about 3/4 cup of liquid. Once you have that down, every substitution above becomes a five-second decision instead of a recipe to look up.