Overnight Oats With Chia Seeds That Set Thick

• Chia absorbs liquid gradually, while Greek yogurt gives the mixture body from the start. Together they prevent the thin, cereal-in-milk texture that can happen with oats alone.
• Mashed banana blends through the jar rather than sitting in chunks, adding sweetness and a thicker finish. Maple syrup remains adjustable, so you can match the sweetness to your toppings.
• The formula makes two substantial jars, with berries held back until serving. That keeps their juice from thinning the base and lets frozen fruit thaw without turning every bite purple.

• 1 cup old-fashioned rolled oats (90 g)
• 2 tablespoons chia seeds (24 g)
• 1 1/2 cups milk, dairy or nondairy (360 g)
• 1/2 cup plain Greek yogurt (120 g)
• 2 tablespoons maple syrup (30 g)
• 1 teaspoon vanilla extract (5 g)
• 1/4 teaspoon kosher salt (1 g)
• 1 cup blueberries, fresh or frozen (150 g)
• 1 medium ripe banana, mashed until nearly smooth (115 g)
• 2 tablespoons chopped toasted pecans, optional, for topping (16 g)

Ingredient notes

• Old-fashioned rolled oats are the right texture here because they soften overnight without disappearing. Quick oats absorb too fast and create a pastier jar, while steel-cut oats remain noticeably firm with this liquid ratio.
• Chia seeds provide the thick set, so use fresh seeds that still look dry and separate in the bag. Ground chia works, but it thickens faster and produces a smoother, less distinct texture in the jar.
• Plain Greek yogurt adds tang and helps the oats feel creamy without extra milk. Use full-fat or low-fat yogurt, but avoid a heavily sweetened flavored cup because it shifts both sweetness and consistency quite a bit.
• Use any milk you regularly enjoy, including dairy, soy, oat, or almond milk. Thinner milks still work because the chia and yogurt handle the setting, though very rich canned coconut milk makes the jar dense indeed.
• Frozen blueberries are convenient and can go on top the night before or in the morning. For the cleanest-looking jar, keep them separate until serving; their thawed juice will tint the oats but not change the flavor.

1. 1Mash the banana

   Peel the banana and mash it in a medium bowl until only small soft pieces remain. A fork is enough. Scrape the mash from the tines so it can blend evenly with the milk and yogurt rather than clinging in one corner, with no large lumps.

2. 2Combine the base

   Add the oats, chia seeds, yogurt, milk, maple syrup, vanilla, and salt to the bowl. Whisk until no yogurt streaks remain, then let the mixture stand for five minutes. Whisk once more, paying attention to the bottom where chia can settle near the rim.

3. 3Divide and cover

   Spoon the oat mixture into two lidded jars holding at least 12 ounces each. Leave a little room at the top for berries and stirring later. Seal the jars and place them in the refrigerator on a level shelf to prevent spills.

4. 4Chill until set

   Refrigerate the jars for at least eight hours, or overnight, so the oats soften completely and the chia hydrates. If your refrigerator runs especially cold, the jars may be ready at seven hours, but eight gives the thickest, most even result across the jar.

   

5. 5Stir and top

   Open a jar and stir from the bottom upward. The oats should look thick and creamy, not soupy; if it seems tighter than you like, stir in one tablespoon milk. Add blueberries and pecans just before eating, or close the lid for transport for an even finish.

   

6. 6Portion as needed

   For a colder, firmer jar, eat it straight from the refrigerator. For a softer texture, let it sit on the counter for ten minutes before topping. Keep toppings dry and separate when packing ahead, especially granola, which loses crunch against the moist oats during an early commute.

• Measure the milk rather than pouring by eye. Too much liquid is the usual reason a chia jar stays loose, and correcting it later means waiting for more chia to hydrate.
• Use jars with at least a 12-ounce capacity so stirring does not send oats over the rim. Wide mouths are easier to scrape, especially after the mixture firms overnight.
• If using frozen berries, add them at serving for the most defined texture. Putting them in overnight is convenient, but their melting juices can loosen the top layer and stain it.
• Taste the mixture before dividing it, then adjust maple syrup in small additions. Sweetness reads differently once cold, so stop just short of dessert-level; berries and banana finish the job.

Serve each jar cold with the blueberries and pecans scattered over the top, plus an extra drizzle of maple syrup only if needed. A hard-boiled egg, turkey sausage, or a piece of toast turns it into a more substantial breakfast without requiring another bowl. For a desk breakfast, keep the toppings in a small container and stir them in just before eating. Coffee alongside is plenty; the oats already bring a creamy, lightly sweet component.