Overnight Oats with Flaxseed

Creamy, wholesome, and incredibly easy to prep, Overnight Oats with Flaxseed are the perfect make-ahead breakfast for busy mornings. This hearty oatmeal recipe combines rolled oats, flaxseed, milk, and naturally sweet flavors into a chilled breakfast that tastes delicious straight from the fridge. Packed with fiber, protein, and healthy fats, these overnight oats keep you full and satisfied for hours. Whether you enjoy them after a workout, as a quick school breakfast, or as part of your weekly meal prep, this simple recipe is endlessly customizable and perfect for Pinterest-worthy breakfast jars.

Why You’ll Love This Recipe

• Quick 5-minute prep with no cooking required
• Great for meal prep and busy mornings
• Loaded with fiber and healthy omega-3s from flaxseed
• Easy to customize with fruit, nuts, or yogurt
• Naturally sweet and creamy texture
• Family-friendly and portable for breakfast on the go

Ingredients Needed

Base Ingredients

• 1 cup old-fashioned rolled oats
• 1 ½ cups milk of choice
• 2 tbsp ground flaxseed
• 1 tbsp chia seeds
• 1 tbsp maple syrup or honey
• ½ tsp vanilla extract
• ½ tsp ground cinnamon
• Pinch of salt

Optional Toppings

• Fresh berries
• Banana slices
• Chopped walnuts or almonds
• Peanut butter or almond butter
• Unsweetened coconut flakes

Step-by-Step Instructions

1. In a medium bowl or mason jar, combine the rolled oats, ground flaxseed, chia seeds, cinnamon, and salt.
2. Pour in the milk, maple syrup, and vanilla extract.
3. Stir thoroughly until everything is fully combined.
4. Cover the bowl or seal the jar with a lid.
5. Refrigerate overnight or for at least 6 hours.
6. In the morning, stir the oats well. Add a splash of milk if you prefer a thinner consistency.
7. Top with berries, banana slices, nuts, or your favorite toppings before serving.

Tips for Success

• Use old-fashioned rolled oats for the best creamy texture.
• Ground flaxseed mixes more smoothly than whole flaxseed.
• Add extra milk if the oats become too thick overnight.
• Mason jars work perfectly for grab-and-go breakfasts.
• Stir the mixture before refrigerating to prevent clumping.
• Sweeten to taste depending on your toppings.

Variations & Substitutions

• Use almond, oat, soy, or coconut milk for a dairy-free version.
• Add Greek yogurt for extra protein and creaminess.
• Stir in cocoa powder for chocolate overnight oats.
• Replace maple syrup with mashed banana for natural sweetness.
• Mix in protein powder for a more filling breakfast.
• Add diced apples and extra cinnamon for a cozy fall flavor.

Serving Suggestions

• Serve chilled straight from the fridge.
• Pair with hard-boiled eggs for a balanced breakfast.
• Top with granola for added crunch.
• Enjoy with fresh fruit and nut butter.
• Pack into jars for meal prep breakfasts during the week.

Storage & Reheating

Store overnight oats in airtight jars or containers in the refrigerator for up to 4 days. For longer storage, keep toppings separate until ready to serve. These oats are usually enjoyed cold, but you can warm them in the microwave for 30–60 seconds if preferred. Add an extra splash of milk before reheating to loosen the texture. Freezing is not recommended because the oats may become watery once thawed.

Frequently Asked Questions

Can I use quick oats instead of rolled oats?

Yes, but the texture will be softer and less chewy than traditional rolled oats.

Can I make overnight oats ahead of time?

Absolutely. Overnight oats are excellent for meal prep and stay fresh for up to 4 days in the fridge.

How do I make overnight oats thicker?

Add extra chia seeds or reduce the amount of milk slightly.

Can I make this recipe dairy-free?

Yes. Use almond milk, oat milk, coconut milk, or any plant-based milk you like.

Do I need to use chia seeds?

No. You can leave them out, although they help create a thicker texture.

Can I add protein powder?

Yes. Stir in 1 scoop of your favorite protein powder and add a little extra milk if needed.

platehacks

Overnight Oats with Flaxseed

Creamy, wholesome, and incredibly easy to prep, these Overnight Oats with Flaxseed are the perfect make-ahead breakfast for busy mornings. Made with rolled oats, flaxseed, chia seeds, milk, and naturally sweet flavors, this chilled breakfast is packed with fiber, protein, and healthy fats to keep you full and energized.

Print Recipe Pin Recipe

Prep Time 5 minutes mins

Total Time 6 hours hrs 5 minutes mins

Servings: 2 jars

Course: Breakfast

Cuisine: American

Calories: 320

Ingredients Equipment Method Notes

Ingredients

  

• 1 cup old-fashioned rolled oats
• 1 1/2 cups milk of choice
• 2 tbsp ground flaxseed
• 1 tbsp chia seeds
• 1 tbsp maple syrup or honey
• 1/2 tsp vanilla extract
• 1/2 tsp ground cinnamon
• 1 pinch salt
• fresh berries (optional topping)
• banana slices (optional topping)
• chopped walnuts or almonds (optional topping)
• peanut butter or almond butter (optional topping)
• unsweetened coconut flakes (optional topping)

Equipment

• medium mixing bowl
• mason jars or airtight containers
• mixing spoon
• measuring cups and spoons
• refrigerator

Method

 

1. In a medium bowl or mason jar, combine the rolled oats, ground flaxseed, chia seeds, cinnamon, and salt.
2. Pour in the milk, maple syrup, and vanilla extract.
3. Stir thoroughly until everything is fully combined.
4. Cover the bowl or seal the jar with a lid.
5. Refrigerate overnight or for at least 6 hours.
6. In the morning, stir the oats well. Add a splash of milk if you prefer a thinner consistency.
7. Top with berries, banana slices, nuts, or your favorite toppings before serving.

Notes

Use old-fashioned rolled oats for the best texture. Ground flaxseed blends more smoothly than whole flaxseed. Add extra milk if the oats become too thick overnight. Customize with fresh fruit, nuts, nut butter, yogurt, or protein powder. Store in airtight containers in the refrigerator for up to 4 days.