Lemon Poppy Seed Blueberry Baked Oatmeal

If you love lemon poppy seed muffins, just wait until you try those same bright, bakery-style flavors baked into a soft, wholesome oatmeal. This Lemon Poppy Seed Blueberry Baked Oatmeal is bursting with fresh lemon juice, fragrant zest, juicy blueberries, and a hint of almond extract for that classic muffin taste.

Naturally sweetened with maple syrup and made gluten-free and dairy-free friendly, this oatmeal bake feels like cake for breakfast — especially when finished with a dreamy lemon yogurt drizzle.

It’s fresh, vibrant, and perfect for spring mornings, meal prep, or brunch with family.

Why You’ll Love This Recipe

Bright lemon flavor from real juice and zest
Naturally sweetened with maple syrup
Gluten-free (with certified GF oats)
Dairy-free adaptable
Packed with juicy blueberries
Perfect for meal prep

Even oatmeal skeptics tend to love this one!

Ingredients You’ll Need

Wet Ingredients

Eggs
Pure maple syrup (or honey)
Fresh lemon zest
Fresh lemon juice
Melted butter, vegan butter, or coconut oil
Unsweetened almond milk (or milk of choice)
Vanilla extract
Almond extract

Dry Ingredients

Old-fashioned rolled oats (not steel cut)
Poppy seeds
Baking powder
Salt

Mix-Ins

Fresh blueberries (or frozen)

Lemon Yogurt Drizzle

Greek yogurt (or dairy-free yogurt)
Powdered sugar (or maple syrup/honey)
Fresh lemon juice
Lemon zest

Easy Customizations

Switch the berries: Try raspberries, blackberries, or chopped cherries. Frozen berries work well, too.
Swap the sweetener: Use honey instead of maple syrup (slightly reduce amount).
Change the seeds: Substitute chia seeds for poppy seeds, or omit entirely.

Make it dairy-free: Use coconut oil or vegan butter and dairy-free yogurt for the glaze.
Make it gluten-free: Use certified gluten-free rolled oats.

Can You Use Steel Cut or Quick Oats?

Steel cut oats are not recommended — they will change the texture significantly. Quick oats may work but may produce a softer texture.

Make It Vegan

Flax or chia eggs may work in place of regular eggs, though this hasn’t been fully tested.

How to Make Lemon Blueberry Baked Oatmeal

Prep your pan
Preheat oven to 350°F and grease a 9×9-inch baking dish.
Mix wet ingredients
In a large bowl, whisk together eggs, maple syrup, lemon zest, lemon juice, melted butter (or oil), milk, vanilla, and almond extract.
Add dry ingredients
Stir in oats, poppy seeds, baking powder, and salt. Fold in blueberries.
Bake
Pour mixture into prepared pan and smooth the top. Bake for 35–45 minutes, until edges are lightly golden and center is set.
Prepare the glaze
In a small bowl, mix yogurt, powdered sugar, lemon juice, and zest until smooth. Adjust consistency as needed for drizzling.
Serve
Drizzle glaze over slightly cooled oatmeal, slice into 6 portions, and enjoy.

How to Serve

This baked oatmeal is delicious warm, at room temperature, or straight from the fridge. It tastes just like a lemon poppy seed muffin — but made with nourishing ingredients.

Make Muffin Cups

For portable oatmeal cups, divide the mixture into lined and greased muffin tins. Bake for 20–25 minutes until set. Makes approximately 10–12 cups.

Storage & Freezing

Refrigerate:
Cool completely, cover, and store in the refrigerator for 4–5 days.

Freeze:
Cut into squares and wrap individually, or freeze the entire pan well wrapped. Store up to 3 months.

Reheat:
Microwave individual portions for 30–60 seconds, or warm larger portions in a 350°F oven.