Start your day with these tasty Key Lime Pie Overnight Oats! They mix creamy yogurt, zesty lime, and crunchy graham cracker crumbs for a breakfast treat that’s both refreshing and fun.
Honestly, who wouldn’t love a pie-inspired breakfast? It’s like having dessert for breakfast, but way healthier. I whip these up the night before, and breakfast is ready when I am!
Key Ingredients & Substitutions
Rolled oats: These are essential for texture. If you don’t have rolled oats, quick oats can work, but the consistency might be a bit mushier. Steel-cut oats are not recommended for this recipe as they won’t soften enough overnight.
Greek yogurt: It adds creaminess and protein. If you’re dairy-free, try coconut yogurt or a plant-based yogurt alternative. For a lighter option, regular yogurt also works well.
Lime juice and zest: Fresh lime juice packs a bright flavor. If fresh limes aren’t available, bottled lime juice can be used, though the taste may differ slightly. Use the zest for extra lime flavor; it’s worth it!
Honey or maple syrup: These sweeteners add a delightful touch. You can swap them for agave syrup, coconut sugar, or even leave out sweeteners based on your preference.
Graham crackers: These give the classic pie flavor and crunch. If you want a gluten-free option, use gluten-free graham crackers or even granola for a twist!
How Do You Get the Right Texture for Overnight Oats?
The key to perfect overnight oats is the soaking time and the right ratio of ingredients. Here’s how to ensure they’re creamy and not dry or watery:
- Combine oats with yogurt and liquid in a 1:1 ratio and adjust based on personal preference for creaminess.
- Let everything sit overnight; this is crucial for the oats to soften and absorb moisture fully.
- If the mixture feels too thick in the morning, simply stir in a splash of milk until it reaches your desired consistency.
Don’t skip the zest and lime juice—they’re what make it feel like Key Lime Pie! Enjoy your oats chilled for a refreshing breakfast.

Key Lime Pie Overnight Oats
Ingredients You’ll Need:
- Rolled Oats: 1/2 cup
- Greek Yogurt: 1/2 cup (plain or vanilla)
- Milk: 1/4 cup (dairy or plant-based)
- Honey or Maple Syrup: 2 tablespoons
- Lime Juice: 1 tablespoon (freshly squeezed)
- Lime Zest: 1/2 teaspoon
- Vanilla Extract: 1/4 teaspoon
- Salt: Pinch
- Graham Crackers or Granola (for topping): 2 tablespoons
- Extra Lime Slices (for garnish): (optional)
- Optional Toppings: shredded coconut or chopped nuts
How Much Time Will You Need?
This delightful breakfast takes about 10 minutes to prepare and you’ll need to let it sit in the fridge for at least 4 hours, or ideally overnight. So, you can prep it in the evening, and it’ll be ready for a tasty start in the morning!
Step-by-Step Instructions:
1. Mix the Base:
In a mixing bowl or a mason jar, combine the rolled oats, Greek yogurt, milk, honey (or maple syrup), lime juice, lime zest, vanilla extract, and a pinch of salt. Stir everything together until it’s well mixed and smooth.
2. Seal It Up:
Cover the jar with a lid or the bowl with plastic wrap to keep it fresh. If you’re using a mason jar, you can simply twist on the lid. This way, no flavors escape!
3. Refrigerate Overnight:
Place the mixed oats in the refrigerator. Let them chill overnight or at least for 4 hours. This soaking time allows the oats to absorb all the delicious flavors and become soft.
4. Give it a Stir:
When you’re ready to eat, take the oats out and give them a good stir. If it seems a bit thick, add a splash of milk until you reach your preferred creaminess. Remember, it should be a bit runny, just like a pie filling!
5. Add Toppings:
Top your oats with crushed graham crackers or granola for that added crunch, a dollop of yogurt for creaminess, and the optional toppings like shredded coconut or nuts. Finish off with a slice of lime for that pop of color and zest!
6. Enjoy!
Serve your Key Lime Pie Overnight Oats chilled and enjoy this refreshing and creamy breakfast that tastes like dessert. Enjoy every spoonful!
Can I Use Steel-Cut Oats Instead of Rolled Oats?
It’s best to stick with rolled oats for this recipe, as steel-cut oats won’t soften enough overnight. If you want to use steel-cut oats, consider cooking them beforehand or soaking them in hot water for a few hours before mixing.
Can I Prep These Oats for More Than One Day?
Absolutely! You can prepare several jars at once and store them in the refrigerator for up to 3 days. Just make sure to leave off any toppings until you’re ready to enjoy them to keep everything fresh and crunchy.
How Can I Make This Recipe Vegan?
To make these overnight oats vegan, simply substitute Greek yogurt with a plant-based yogurt, and use maple syrup instead of honey. Additionally, ensure your milk is dairy-free, like almond, soy, or oat milk.
What Should I Do If I Don’t Have Lime Juice?
If you don’t have lime juice, lemon juice can be a suitable substitute for a similar tart flavor. Just use the same amount, and be sure to adjust the zest as well if you’re using it from a lime. It will give you a bit of a lemon twist!



