One-Bowl Lemon Blueberry Oatmeal

Featured in: Sweet Cozy Treats

These baked oatmeal cups combine rolled oats with fresh blueberries and zesty lemon for a bright flavor. Mixed in one bowl, the batter blends eggs, almond milk, maple syrup, and warm spices before folding in juicy berries. Baked until golden and set, the cups offer a portable and nutritious option, perfect for busy mornings. Customize with plant-based milk or nut toppings for added texture and flavor. Store refrigerated or freeze to keep them fresh throughout the week.

Updated on Fri, 13 Feb 2026 10:15:00 GMT
Bright lemon blueberry baked oatmeal cups with juicy berries and citrus zest, perfect for a healthy breakfast on the go. Save
Bright lemon blueberry baked oatmeal cups with juicy berries and citrus zest, perfect for a healthy breakfast on the go. | hazeldish.com

There's something about the smell of lemon zest hitting a warm bowl of oats that made me stop rushing through breakfast altogether. I was standing in my kitchen one Tuesday morning, honestly just trying to get something nutritious done before work, when I grabbed a lemon on impulse and thought, why not? The result was these little golden cups that somehow made me sit down with coffee instead of eating in the car.

I brought these to a friend's house for a weekend brunch, and she ate three of them while we were still talking about nothing important. That's when I knew they weren't just wholesome—they were actually craveable, the kind of thing people reach for without thinking. Now she texts me asking if I've made them lately, which is the highest compliment a recipe can get.

Ingredients

  • Old-fashioned rolled oats (2 cups): The texture here matters—they stay sturdy and nutty instead of turning into mush, giving each bite real character.
  • Eggs (2 large): These bind everything together and create a structure that holds the cups upright without them being dense or rubbery.
  • Unsweetened almond milk or any milk (1 cup): Whatever you have in the fridge works, though the liquid matters for how tender they turn out.
  • Pure maple syrup (1/3 cup): This gives subtle sweetness and moisture that keeps them from drying out, even after several days of storage.
  • Melted coconut oil or butter (2 tablespoons): The fat creates richness and helps everything hold together without being greasy.
  • Pure vanilla extract (1 teaspoon): Just enough to deepen the flavor without announcing itself.
  • Lemon zest and fresh lemon juice (zest of 1 large lemon, 2 tablespoons juice): This is where the magic happens—the zest brings brightness and the juice adds a subtle tang that makes you reach for another cup.
  • Baking powder (1 teaspoon): A gentle lift that keeps them light and slightly tender.
  • Ground cinnamon (1/2 teaspoon): Warm and grounding, it plays nicely with the lemon instead of fighting it.
  • Fine sea salt (1/4 teaspoon): The smallest pinch that makes every flavor sing a little louder.
  • Fresh or frozen blueberries (1 cup): Use them straight from the freezer if that's what you have—they thaw beautifully and release their juice throughout baking.

Instructions

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Get Your Setup Ready:
Preheat the oven to 350°F and get your muffin tin lined or greased—this step takes two minutes but saves you from the scramble later. Having everything prepared means you can focus on mixing without distractions.
Blend the Wet Ingredients:
Whisk the eggs, milk, maple syrup, coconut oil, vanilla, lemon zest, and lemon juice together until it's smooth and the zest is distributed throughout. You'll notice the mixture smells incredible already—that's your signal you're on the right track.
Combine Everything:
Pour the wet mixture into a bowl with the oats, baking powder, cinnamon, and salt, then stir until every oat is coated and there are no dry pockets. It should look like thick porridge, the kind that holds together when you stir.
Fold in the Blueberries:
Gently stir in the blueberries so they're distributed evenly but still mostly whole. If you're using frozen ones, don't thaw them first—they'll hold their shape better during baking.
Fill the Cups:
Spoon the batter into your prepared muffin cups, filling each almost to the rim so they bake up substantial and satisfying. The batter should be thick enough that it doesn't slump or overflow.
Bake Until Golden:
Slide them into the oven for 23 to 25 minutes, watching for a light golden color on top and a toothpick that comes out clean from the center. The kitchen will smell like a lemon cake bakery at this point.
Cool with Patience:
Let them sit in the pan for 10 minutes so they set up and hold their shape, then transfer to a wire rack to cool all the way through. This matters more than you'd think—they'll be sturdier and less likely to crumble.
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Prepare wholesome dog meals by mixing with warm water for easy serving and homemade-style feeding.
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| hazeldish.com

There's a quiet satisfaction in opening your fridge on a hectic morning and finding these little cups ready to go, like you did something kind for yourself yesterday. It's one of those recipes that turns breakfast from a rushed obligation into an actual moment of care.

Storage and Make-Ahead Magic

These cups live happily in the fridge for up to five days in an airtight container, staying moist and ready to eat straight from the cold or quickly warmed up. You can also freeze them for up to two months, which means you could theoretically make a triple batch in March and still be eating them in May if you wanted to.

Flavor Variations That Work

The lemon-blueberry combination is solid, but the real magic is that this recipe is flexible enough to follow your mood or what's in your produce drawer. Raspberries or blackberries bring a slightly sharper tartness, while a swap to orange zest and dried cranberries takes it in a completely different direction without changing the technique at all.

Adding Extra Texture and Personality

If you want to elevate these beyond wholesome breakfast, there are a few easy moves that transform them from simple to special. A sprinkle of chopped almonds, walnuts, or sunflower seeds on top before baking adds a satisfying crunch and keeps things interesting through the whole week.

  • Press a small handful of crushed granola onto the top of each filled cup right before baking for a crunchy surprise.
  • Drizzle with a touch of honey or lemon glaze after they cool if you want them slightly sweeter and more special.
  • Add a tablespoon of finely chopped crystallized ginger to the batter for a sophisticated warmth that plays beautifully with the lemon.
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Wholesome one-bowl oatmeal cups bursting with fresh blueberries and zesty lemon flavor, ideal for busy mornings. Save
Wholesome one-bowl oatmeal cups bursting with fresh blueberries and zesty lemon flavor, ideal for busy mornings. | hazeldish.com

These cups prove that breakfast doesn't have to be complicated to feel intentional and nourishing. Make a batch and watch how easily mornings get a little brighter.

One-Bowl Lemon Blueberry Oatmeal

Bright oatmeal cups packed with blueberries, lemon zest, and warm spices for a wholesome start.

Prep Time
10 min
Time to Cook
25 min
Overall Time
35 min
Created by Isabel Grant

Dish Type Sweet Cozy Treats

Skill Level Easy

Inspired By American

Makes 12 Number of servings

Dietary Details Vegetarian-Friendly, No Dairy

What You Need

Oats & Dry Ingredients

01 2 cups old-fashioned rolled oats
02 1 teaspoon baking powder
03 1/2 teaspoon ground cinnamon
04 1/4 teaspoon fine sea salt

Wet Ingredients

01 2 large eggs
02 1 cup unsweetened almond milk
03 1/3 cup pure maple syrup
04 2 tablespoons melted coconut oil
05 1 teaspoon pure vanilla extract
06 Zest of 1 large lemon
07 2 tablespoons fresh lemon juice

Fruit

01 1 cup fresh blueberries

How to Make It

Step 01

Prepare Muffin Tin: Preheat oven to 350°F. Line a 12-cup muffin tin with paper liners or lightly grease with cooking spray.

Step 02

Combine Wet Ingredients: In a large bowl, whisk together eggs, milk, maple syrup, melted coconut oil, vanilla extract, lemon zest, and lemon juice until well combined.

Step 03

Mix Dry Ingredients: Add rolled oats, baking powder, cinnamon, and salt. Stir until the mixture is fully combined and all oats are moistened.

Step 04

Fold in Blueberries: Gently fold blueberries into the batter using a spatula.

Step 05

Fill Muffin Cups: Divide batter evenly among prepared muffin cups, filling each almost to the top.

Step 06

Bake Oatmeal Cups: Bake for 23 to 25 minutes, or until the oatmeal cups are set, golden on top, and a toothpick inserted in the center comes out clean.

Step 07

Cool and Store: Allow to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely. Store in an airtight container in the refrigerator for up to 5 days, or freeze for up to 2 months.

Tools You’ll Need

  • 12-cup muffin tin
  • Paper liners or nonstick spray
  • Large mixing bowl
  • Whisk
  • Spatula

Allergy Details

Review each ingredient for allergens. Always reach out to a healthcare professional for help if you’re unsure.
  • Contains eggs
  • Contains oats, may be cross-contaminated with gluten; use certified gluten-free oats if needed
  • Contains coconut if using coconut oil

Per-Serving Nutrition

Nutritional data is for general reference only. It shouldn't replace advice from your doctor.
  • Calorie Count: 120
  • Fats: 3.5 g
  • Carbohydrates: 20 g
  • Proteins: 3 g