snacks3 Ingredients · Make Ahead5 min prep · overnight restapprox. 180 kcal per bottle · serves 2

Overnight Chia Oat Milk Bottles

September 29, 2026

This is the kind of thing I make on a Sunday evening when I want Monday morning sorted before it starts. Two bottles in the fridge, and breakfast — or a mid-morning snack — is already done.

The ratio matters. Three tablespoons of chia seeds to two cups of oat milk gives you a drink that is thick and satisfying without being so set it feels like pudding. It should pour easily and shake back to life after a night in the fridge.

I use glass bottles because they seal well and make it easy to shake before drinking. The ones in the photo are simple glass milk bottles — the kind with a metal cap. They hold exactly the right amount and look lovely on the fridge shelf.

The recipe, step by step

What you'll need

  • 2 cups full-fat oat milk
  • 3 tablespoons chia seeds
  • 4 teaspoons honey

How to make it

  1. 1

    Measure the oat milk, chia seeds, and honey into a jug or bowl. Stir well to combine — make sure the honey is fully dissolved and the chia seeds are evenly distributed.

  2. 2

    Divide the mixture evenly between two glass bottles — 1 cup oat milk, 1½ tablespoons chia seeds, and 2 teaspoons honey per bottle.

  3. 3

    Seal the bottles and give each one a good shake to mix again. This helps prevent the chia seeds from clumping at the bottom.

  4. 4

    Place in the fridge overnight, or for at least 6 hours, until the chia seeds have swelled and the mixture has thickened into a creamy drink.

  5. 5

    Before drinking, give the bottle a good stir or shake to loosen everything up. Drink straight from the bottle or pour into a glass.

Why it works

  • Chia seeds: One of the most nutrient-dense foods you can add to your diet. Rich in omega-3 fatty acids, fibre, and plant-based protein. The soluble fibre in chia seeds forms a gel when mixed with liquid, which slows digestion and keeps you feeling full for longer.
  • Full-fat oat milk: Provides slow-release carbohydrates for sustained energy, along with beta-glucan — a soluble fibre that supports healthy cholesterol levels and feeds beneficial gut bacteria.
  • Honey: A natural sweetener with trace antioxidants and antimicrobial properties. A small amount goes a long way — four teaspoons across two bottles adds just enough sweetness without tipping into dessert territory.

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