Easy High-Protein Overnight Oats

These high protein overnight oats take 5 minutes to prep and chill into a creamy make-ahead breakfast with Greek yogurt, oats, chia, and berries.

Why These High Protein Overnight Oats Work

Greek yogurt thickens the oats while adding protein, chia seeds help the mixture set, and berries keep each jar fresh without extra prep in the morning.

Prep time: 5 minutes.
Chill time: 6 to 12 hours.
Yield: 1 large jar.
Meal prep: Make up to 4 jars at once.
Best jar size: 16 oz wide-mouth glass jar.

Rolled oats, Greek yogurt, milk, chia seeds, berries, peanut butter, and maple syrup — Use plain Greek yogurt and rolled oats for the thickest, creamiest texture.

Ingredients for 1 Jar

1/2 cup old-fashioned rolled oats
1/2 cup plain Greek yogurt
1/2 cup milk, dairy or unsweetened almond milk
1 tbsp chia seeds
1 tbsp peanut butter
1 tsp maple syrup
1/2 cup mixed berries
1/8 tsp vanilla extract
1 small pinch kosher salt

How to Make High Protein Overnight Oats

1. Build the base

Add 1/2 cup rolled oats to a 16-oz jar.
Add 1/2 cup Greek yogurt, 1/2 cup milk, 1 tbsp chia seeds, peanut butter, maple syrup, vanilla, and salt.
Stir for 45 seconds, scraping the bottom of the jar.

Hand stirring overnight oats with berries, chia seeds, yogurt, and milk in a glass jar — Stir until no dry oats are stuck at the bottom of the jar.

2. Add berries and chill

Fold in 1/2 cup berries.
Seal the jar with a lid.
Refrigerate for at least 6 hours or up to 4 days.
Stir before eating and add 1 tbsp milk if you want it looser.

Meal Prep Batch for 4 Jars

2 cups old-fashioned rolled oats
2 cups plain Greek yogurt
2 cups milk
1/4 cup chia seeds
1/4 cup peanut butter
4 tsp maple syrup
2 cups mixed berries
1/2 tsp vanilla extract
1/2 tsp kosher salt

Divide the ingredients evenly between 4 jars, stir each jar well, and refrigerate. Keep jars sealed until breakfast.

Four glass jars of high protein overnight oats stored in the refrigerator with berries — Prep four jars on Sunday night for easy breakfasts through Thursday.

Flavor Variations

Blueberry almond: Use blueberries and 1 tbsp almond butter.
Chocolate banana: Add 1 tsp cocoa powder and 1/2 sliced banana before serving.
Strawberry vanilla: Use chopped strawberries and an extra 1/8 tsp vanilla.
Apple cinnamon: Use 1/2 cup diced apple and 1/4 tsp cinnamon.

For more meal prep breakfasts, see High-Protein Breakfast Ideas Without Eggs, High-Protein Cottage Cheese Egg Bites, and Cottage Cheese Cookie Dough Bowl.

Common Mistakes

Using quick oats

Quick oats soften faster but can turn pasty after a full night. Rolled oats hold their texture better.

Skipping the salt

A tiny pinch of salt makes the oats taste fuller and balances the yogurt tang.

Overfilling the jar

Use a 16-oz jar so you have room to stir before chilling and again before eating.

High Protein Overnight Oats FAQ

Can I make this without protein powder?

Yes. This recipe gets its protein from Greek yogurt, milk, chia seeds, oats, and peanut butter.

How long do overnight oats last?

Store sealed jars in the refrigerator for up to 4 days. The texture is thickest after the first night.

Can I warm them up?

Yes. Remove the metal lid and microwave the oats in a microwave-safe jar or bowl for 45 to 60 seconds.