How Long To Bake Blueberry Muffins At 350

At 350°F, blueberry muffins typically bake for 18 to 25 minutes, depending on their size and your oven’s quirks.
 
That’s the short answer, and honestly, it’s the one most of us need when the batter is already in the tin and the oven is humming.
 
But if you want muffins with tall, domed tops and a tender crumb instead of sad, sunken centers, there’s a little more to know about baking blueberry muffins at 350.
 
In this post, we’ll walk through exactly how long to bake blueberry muffins at 350, how to tell when they’re done, and how to fix things when they go sideways.
 
Let’s get baking.
 

How Long to Bake Blueberry Muffins at 350?

So, how long do you bake blueberry muffins at 350?
 
For standard-sized muffins, bake them at 350°F for 18 to 25 minutes.
 
Mini muffins need less time, usually 10 to 14 minutes at 350.
 
Jumbo muffins need more, often 25 to 30 minutes at 350.
 
So the real answer to how long to bake blueberry muffins at 350 depends on the size of your muffins.
 
That’s the baseline, but your oven, your pan, and even your blueberries can nudge that window.
 

1. Standard Muffins Take 18 to 25 Minutes

If you’re baking a regular batch in a standard 12-cup tin, 18 to 25 minutes at 350°F is your sweet spot.
 
Start checking at the 18-minute mark.
 
At that point, the tops should be golden and a toothpick inserted into the center should come out with just a few moist crumbs.
 
If it comes out wet, give them another 2 to 3 minutes and check again.
 

2. Mini Muffins Bake in 10 to 14 Minutes

Mini muffins have way more surface area relative to their volume, so they bake fast.
 
At 350°F, expect mini blueberry muffins to be done in 10 to 14 minutes.
 
Check them at 10 minutes because they can go from perfect to dry in a blink.
 

3. Jumbo Muffins Need 25 to 30 Minutes

Jumbo muffin tins hold about twice the batter, so they need a longer, gentler bake.
 
At 350°F, plan on 25 to 30 minutes for jumbo blueberry muffins.
 
If the tops start browning too fast, tent them loosely with foil and keep baking until the centers set.
 

How to Tell When Blueberry Muffins Are Done

Knowing how long to bake blueberry muffins at 350 is half the battle, but you still need to know what “done” actually looks like.
 

1. The Toothpick Test

Insert a toothpick into the center of a muffin.
 
If it comes out clean or with a few moist crumbs, they’re done.
 
If it comes out coated in wet batter, they need more time.
 

2. Golden, Domed Tops

Finished blueberry muffins at 350 should have golden-brown, slightly domed tops.
 
If the tops are still pale and flat, they’re underbaked.
 

3. The Spring-Back Test

Gently press the top of a muffin with your finger.
 
If it springs back, it’s done.
 
If your finger leaves a dent, pop them back in for another couple of minutes.
 

4. Internal Temperature of 200°F

For the most accurate read, stick an instant-read thermometer into the center.
 
Blueberry muffins are fully baked when they hit about 200°F.
 
This is especially handy for jumbo muffins, where the outside can look done while the middle is still raw.
 

Tips for Baking Blueberry Muffins at 350

Here are a few tricks that make baking blueberry muffins at 350°F work in your favor every time.
 

1. Don’t Overmix the Batter

Stir the batter until the flour just disappears.
 
Overmixing develops gluten, and gluten makes muffins tough and tunnely instead of tender.
 

2. Toss Blueberries in Flour

Toss your blueberries in a spoonful of flour before folding them in.
 
This keeps them from sinking to the bottom, so every bite of your blueberry muffins has fruit in it.
 

3. Fill the Cups Nearly Full

Fill each cup about three-quarters to almost full.
 
That extra batter is what gives you those tall, bakery-style domes.
 

4. Start with a Hot Oven

Make sure your oven is fully preheated to 350°F before the muffins go in.
 
An underheated oven means uneven baking and a longer, less predictable bake time.
 

5. Rotate the Pan Halfway Through

If your oven has hot spots, rotate the pan at the halfway mark.
 
This helps every muffin bake evenly, so you’re not pulling out a tray with some done and some doughy.
 

6. Let Them Cool in the Pan Briefly

Let muffins rest in the tin for about 5 minutes after they come out.
 
Then move them to a wire rack.
 
Leaving them in the pan too long steams the bottoms and makes them soggy.
 

Common Mistakes When Baking Blueberry Muffins at 350

Even with the right time and temperature, a few missteps can ruin a batch.
 

1. Opening the Oven Too Early

Resist the urge to peek before the 15-minute mark.
 
Opening the door lets heat escape and can cause muffins to sink in the middle.
 

2. Using Cold Ingredients

Room-temperature eggs and milk blend more smoothly into the batter.
 
Cold ingredients can make the batter seize up and bake unevenly.
 

3. Overbaking “Just to Be Safe”

Every extra minute past 25 dries your blueberry muffins out.
 
Set a timer and trust the toothpick test over your nerves.
 

4. Frozen Blueberries Straight from the Freezer

Frozen berries add extra moisture and chill the batter, which can stretch the bake time.
 
If you use frozen blueberries, add 2 to 4 minutes to your bake time at 350°F.
 

So, How Long to Bake Blueberry Muffins at 350?

Blueberry muffins bake at 350°F for 18 to 25 minutes for standard size, 10 to 14 minutes for mini, and 25 to 30 minutes for jumbo.
 
The exact time depends on your muffin size, your oven, and whether your blueberries were fresh or frozen.
 
The good news is that once you know how long to bake blueberry muffins at 350 and how to check for doneness, you can nail a perfect batch every time.
 
So preheat that oven, grab your muffin tin, and enjoy warm blueberry muffins fresh from your kitchen.