Overnight oats are a tasty and super-convenient breakfast that can be made days in advance. Depending on what toppings you put on them, or what you choose as your base (plant-based milk or dairy), this can affect how long overnight oats last – but however you make them, chances are they’ll be delicious hot or cold.

Yes, you can absolutely heat up overnight oats, whether you’re using one of our 3Bears ready-made products, or making your own batch from scratch. Heating them up changes the texture and quickly creates a warming, cosy meal, perfect for cold winter days. Below are tips and tricks to make your hot overnight oats as tasty as possible.

“For me, fruity overnight oats always make the best warm porridge. The strawberries stay juicy and the oats give a smooth, comforting base.” – 3Bears co-founder Tim.

Why heat up overnight oats?

• Comfort: On a cold day, warm overnight oats are comforting and luxurious – and can be a perfect midday snack or dessert. Heating can also release more flavour, especially with fruit. Try it with our Banana Split flavour!
• Porridge with a twist: If you like porridge, warmed overnight oats offer a familiar but creamier texture – without all the prep.

“Our Banana Split flavour gets even richer when warm, like an indulgent dessert for breakfast but nourishing.” – 3Bears co-founder Caroline.

Best ways to heat up overnight oats

You can heat overnight oats in a few ways. Avoid drying them out or overcooking. Too much heat evaporates the liquid and makes them gummy. Here are the best methods:

Method 1: Stovetop (best texture)

You’ll need: Small saucepan, spoon or spatula, splash of liquid (milk or water).

1. Transfer & add liquid: Tip your overnight oats into a small saucepan. Add 1–2 tbsp of milk (dairy or non-dairy) or water to replace liquid absorbed overnight and prevent gumminess.
2. Heat on low: Use low heat and stir continuously to avoid sticking. Do not let them boil hard. Total time about 2 minutes.

“Add toppings after heating, especially berries and bananas, for a better contrast of texture and flavour.”

Method 2: Microwave (fastest & easiest)

You’ll need: Microwave-safe bowl, splash of liquid.

1. Transfer & add liquid: Spoon oats into a bowl at least twice the volume of your portion. Add a small splash of milk or water.
2. Short intervals: 50% power, 30-second bursts. Stir after each burst and top up liquid if drying out.

Final takeaway

Hot or cold, overnight oats are quick, easy, and delicious. Short on time? Our 3Bears Overnight Oats can be enjoyed hot with minimal prep. Happy cooking.