One-Bowl Lemon Blueberry Baked Oatmeal Cups

Featured in: Breakfast

These wholesome oatmeal cups combine the bright freshness of lemon with sweet blueberries in an easy, portable breakfast format. The one-bowl method makes preparation simple, while the individual muffin-sized portions are ideal for meal prep and busy mornings. Each cup delivers warm, comforting oats with a tender texture and golden-baked edges.

The versatility shines through with dairy-free options and the ability to swap in different berries. At just 120 calories per cup, they offer a satisfying balance of carbohydrates, protein, and healthy fats to fuel your morning.

Updated on Sun, 08 Feb 2026 08:13:00 GMT
Golden-baked One-Bowl Lemon Blueberry Baked Oatmeal Cups cooling on a wire rack, perfect for grab-and-go breakfasts. Save
Golden-baked One-Bowl Lemon Blueberry Baked Oatmeal Cups cooling on a wire rack, perfect for grab-and-go breakfasts. | cheerfulchefs.com

Last Tuesday morning, I stood in my kitchen half-asleep, staring at a container of blueberries that wouldn't last another day. My daughter needed something she could grab before school, and I needed breakfast to not feel like a daily negotiation. That's when it clicked—what if I baked the oatmeal into individual cups, made them portable, and let the bright lemon do all the talking? By the time they came out of the oven, golden and fragrant, I realized I'd stumbled onto something that would become a weekly ritual.

I brought these to a book club meeting, still warm in a parchment-lined box, and watched my friend Sarah take one bite and immediately ask for the recipe. She'd been trying to meal-prep for weeks without success, and suddenly here was something that felt indulgent enough for comfort but wholesome enough that she could eat it without guilt. That moment taught me that the best recipes are the ones that solve actual problems while tasting like a small celebration.

Ingredients

  • Old-fashioned rolled oats: Don't reach for instant oats here—the texture matters, and you want something that absorbs the wet ingredients without turning to mush.
  • Eggs: They bind everything together and add structure; this is why these hold their shape better than you'd expect from an oatmeal situation.
  • Almond milk or dairy milk: Use whatever you have or prefer; the amount matters more than the type for getting the batter consistency just right.
  • Maple syrup: This gives a gentle sweetness without the crystalline crunch of sugar, and it keeps the cups tender.
  • Coconut oil or butter: Melted, this adds moisture and richness; don't skip it even if you think you can.
  • Lemon zest and juice: This is the secret weapon that makes people pause and ask what's different about these oatmeal cups.
  • Fresh or frozen blueberries: Either works, and honestly frozen berries sometimes burst more generously throughout the batter.
  • Baking powder: Just enough to give them a subtle lift without making them cakey.
  • Cinnamon and salt: Cinnamon adds warmth, and salt amplifies every other flavor, making the lemon sing even louder.

Instructions

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Warm your oven and prepare your cups:
Set your oven to 350°F and line a muffin tin with paper liners—they peel away so cleanly, making breakfast even easier the next day. If you prefer, a light spray of cooking oil works just as well.
Blend the wet ingredients:
In a large bowl, whisk together eggs, milk, maple syrup, melted coconut oil, vanilla, lemon zest, and juice until it looks uniform and slightly frothy. This takes about a minute, and you'll smell the lemon immediately—that's the signal you're on the right track.
Combine the dry ingredients with the wet:
Stir in the oats, baking powder, cinnamon, and salt, mixing just until everything is moistened and no dry oat clusters remain. The batter should feel thick and porridge-like, not pourable.
Gently fold in the blueberries:
Add them carefully so they distribute somewhat evenly without crushing and turning the whole thing purple. You want pockets of fruit throughout, not berry jam.
Fill the muffin cups:
Divide the batter evenly, filling each cup nearly to the top—these don't rise dramatically, so you want them generously filled. A small spoon or ice cream scoop keeps things fair and balanced.
Bake until set and golden:
Slide them into the oven for 23 to 25 minutes; you're looking for the tops to turn a light golden brown and a toothpick inserted in the center to come out clean. The edges might look slightly darker, and that's perfect.
Cool and store:
Let them rest in the pan for 10 minutes—this makes them sturdier and easier to remove—then transfer to a wire rack to cool completely. Once cool, they keep in the refrigerator for up to five days in an airtight container, or frozen for up to two months.
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Dries dishes, utensils, and cookware neatly after cooking, keeping your countertop organized and clutter free.
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Freshly baked One-Bowl Lemon Blueberry Baked Oatmeal Cups served warm with a dollop of yogurt and extra lemon zest. Save
Freshly baked One-Bowl Lemon Blueberry Baked Oatmeal Cups served warm with a dollop of yogurt and extra lemon zest. | cheerfulchefs.com

There's something quietly satisfying about peeling back that paper wrapper and biting into a warm oatmeal cup on a Tuesday morning, knowing you made something this wholesome with your own hands. It transforms a rushed breakfast into a moment that feels intentional.

Why Lemon Changes Everything

Oatmeal can feel heavy or forgettable, but lemon zest wakes up every single bite with brightness. The citrus cuts through the richness of the oil and the sweetness of the maple syrup, making the whole thing feel lighter and more alive than it has any right to be. It's the difference between a breakfast you tolerate and one you actually think about while you're doing dishes.

Customization That Makes Sense

These cups are flexible enough to shift with the seasons and what you have on hand. In summer, I've swapped blueberries for raspberries and added a bit of ginger for intrigue. In fall, blackberries and a touch more cinnamon feel natural. The lemon stays constant because it's really the backbone of the flavor profile, but everything else can bend depending on your mood and pantry.

Making Mornings Easier Than They Need to Be

The genius of these cups is that they solve the breakfast problem before it even becomes a problem. You make them once, and then for the next five days, you just grab one, peel back the paper, and eat something warm and real. No guilt, no shortcuts that leave you hungry by ten, no debate about what to eat. I started doubling this recipe just so I could freeze half a batch and extend the ease into weeks.

  • Keep the freezer stocked by making a double batch and freezing half in a freezer bag with parchment between each cup.
  • Reheat a frozen or refrigerated cup in the microwave for 30 seconds to a minute, and it comes back to almost-fresh warmth.
  • If you're cooking for one, these freeze beautifully and portion themselves perfectly—no waste, no drama.
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Moist One-Bowl Lemon Blueberry Baked Oatmeal Cups studded with juicy blueberries and golden edges, ready for meal prep. Save
Moist One-Bowl Lemon Blueberry Baked Oatmeal Cups studded with juicy blueberries and golden edges, ready for meal prep. | cheerfulchefs.com

These lemon blueberry oatmeal cups became the breakfast that I actually crave, and that's the highest compliment any recipe can get. Make a batch this week and taste the difference intentional mornings make.

Recipe FAQs

Can I use frozen blueberries instead of fresh?

Yes, frozen blueberries work perfectly in this batter. Use them unthawed and fold them in gently to prevent excessive bleeding of color into the mixture. No need to adjust baking time.

How should I store these oatmeal cups?

Store in an airtight container in the refrigerator for up to 5 days. For longer storage, freeze individually wrapped cups for up to 2 months. Reheat in the microwave for 30-45 seconds before serving.

Can I make these dairy-free?

Absolutely. Use unsweetened almond milk, soy milk, or oat milk in place of dairy milk. Ensure your coconut oil or plant-based butter substitute is high quality for the best texture and flavor.

What other fruits can I substitute for blueberries?

Raspberries, blackberries, or chopped strawberries work beautifully. For a different flavor profile, try diced apples with cinnamon or chopped peaches during summer months.

Can I use steel-cut oats instead of rolled oats?

Steel-cut oats are not recommended as they require significantly longer cooking time and won't soften properly in the baking timeframe. Stick to old-fashioned rolled oats for the best texture.

How do I know when the oatmeal cups are done baking?

The cups are ready when they're set and golden on top, typically after 23-25 minutes. Insert a toothpick into the center—it should come out clean or with just a few moist crumbs, not wet batter.

One-Bowl Lemon Blueberry Baked Oatmeal Cups

Bright, zesty oatmeal cups with juicy blueberries—perfect for portable breakfasts.

Prep Time
10 minutes
Cook Time
25 minutes
Overall Time
35 minutes
Creator Ruby Smiles

Recipe Type Breakfast

Skill Level Easy

Cuisine Background American

Portions 12 Serves

Dietary Preferences Vegetarian-Friendly, Dairy-Free Option

What You’ll 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

Step-by-Step Guide

Step 01

Prepare Pan and Preheat Oven: 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, almond milk, maple syrup, melted coconut oil, vanilla extract, lemon zest, and lemon juice until well combined.

Step 03

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

Step 04

Fold in Blueberries: Gently fold blueberries into the batter to distribute evenly without crushing the fruit.

Step 05

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

Step 06

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

Step 07

Cool and Store: Allow oatmeal cups 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

Potential Allergens

Inspect ingredients for specific allergens and contact a professional for concerns.
  • Contains eggs
  • Contains oats (may be cross-contaminated with gluten; use certified gluten-free oats if needed)
  • Contains coconut if using coconut oil

Nutritional Details (Per Serving)

Provided as supportive info; always cross-check with your healthcare provider.
  • Calories: 120
  • Fats: 3.5 grams
  • Carbohydrates: 20 grams
  • Proteins: 3 grams