Cinnamon Apple Cake Mix Muffins with Streusel Topping

Soft, bakery-style muffins made from a doctored cake mix, loaded with fresh apples and topped with a buttery cinnamon streusel.

When Plan A Doesn’t Happen (Welcome to My Kitchen)

I wish I could tell you this recipe was carefully planned… but that’s almost never how things go around here.

I fully intended to make these muffins with a spice cake mix. I could already taste them—warm spices, tender crumb, that perfect fall flavor.

Then I opened the pantry.

No spice cake mix.

Not even close.

My Out of the Box Approach. . .Saves the Day!

Now, if you’ve spent any time with me or on my blog, you already know—this is exactly how it goes in my kitchen. “Out of the Box Baking” isn’t just a cute name. It’s a lifestyle. It means I’m constantly adjusting, pivoting, and making something work with what I have on hand.

So instead of giving up, I took a look around.

White cake mix? Check.
Apples? Check.
Spices? Definitely.

And just like that, a new plan was born.

These muffins are the result of that little kitchen pivot—and honestly? I don’t think I’ll ever go back. They’re soft, rich, full of cinnamon apple flavor, and that buttery streusel on top takes them completely over the edge.

Why You’ll Love These Muffins

These muffins are:

• Soft, moist, and full of warm cinnamon flavor
• Packed with fresh apple in every bite
• Topped with a buttery, crumbly streusel
• Made with simple pantry ingredients
• Perfect for breakfast, brunch, or dessert

Ingredients

You will find a full printable recipe card at the bottom of this post, but here's a quick glance at what you'll need. These are simple ingredients you might already have in your pantry or refrigerator. (And like I mentioned above, the cake mix part is versatile!)

Muffins

• 1 box white cake mix
• 2 large eggs
• ½ cup melted butter
• ¾ cup milk
• 1 to 1½ cups finely diced apple (about ¼-inch pieces)
• 1½ teaspoons apple pie spice (or pumpkin pie spice)
• ½ teaspoon cinnamon

Note: You can use a spice cake mix in place of white. Just skip the added spices.

Optional:

• ½ cup chopped pecans
• ⅓ cup craisins

Streusel Topping

• ¼ cup brown sugar
• ¼ cup all-purpose flour
• 2 tablespoons cold butter
• Pinch of cinnamon

How to Make Cinnamon Apple Muffins

These come together so easily, friends! In fact, you might not go back to making muffins the "from scratch" way after you see how simple this method is.

1. Preheat oven to 350°F. Line a muffin tin with cupcake liners.
2. Mix the batter: In a large bowl, combine cake mix, eggs, melted butter, and milk. Stir until well combined.
3. Add the apples and spice: Fold in the diced apples, apple pie spice, and cinnamon. If using pecans or craisins, add them now.
4. Make the streusel: In a small bowl, combine brown sugar, flour, and cinnamon. Cut in cold butter with a fork until crumbly.
5. Fill the muffin cups: Scoop batter into liners, filling about ¾ full.
6. Top with streusel: Generously sprinkle streusel over each muffin.
7. Bake: Bake for 18–22 minutes, or until a toothpick inserted in the center comes out clean.
8. Cool slightly and enjoy: Let muffins cool for a few minutes before serving.
9. Store in an airtight container in the refrigerator. They should stay fresh for 4-5 days.

At a Glance

• Skill Level: Easy
• Flavor Profile: Warm cinnamon apple with buttery crumble
• Options Included: Pecans, craisins, spice variations
• Best For: Breakfast, brunch, fall baking, quick desserts

What to Expect from these Muffins

As a rule, I don't reach for muffins before cupcakes. (Hey, I love frosting!) In this case, however, I'm all in. I love, love, love apple in muffins and these did not disappoint. The moisture and sweetness from the apples was a lovely contrast against the spices and the crunch of the pecans.

And those craisins? I know it might sound like an odd addition, but they were absolutely perfect! They softened a bit while baking and offered a complementary flavor profile and additional sweetness.

And can we talk about that streusel on top? It's not heavy. In fact, it went on more sugar than crumble, so I wasn't holding out hope that it would work out. . .but it did! It added more crunch and sweetness. All in all, I would have to say this muffin is a rousing success!

Tips for Success

• Dice apples small so they soften while baking
• Toss apples in a bit of dry cake mix to prevent sinking
• Don’t overmix—just stir until combined
• Use cold butter for the best streusel texture
• Use liners for easy removal (especially with streusel)

Variations

• Use a spice cake mix instead of white and reduce added spices slightly
• Swap apples for pear for a softer, sweeter flavor
• Add a drizzle of vanilla glaze after baking for a bakery-style finish

Storage

Store in an airtight container at room temperature for up to 2 days, or refrigerate for up to 5 days.

Perfect Pairings

These muffins are delicious with:

• Coffee or hot tea
• Fresh fruit
• A light glaze or dusting of powdered sugar

More Cake Mix Creations You’ll Love

If you love baking “out of the box,” be sure to check out:

• Cake Mix Creations
• Cake Mix Cupcakes
• Cake Mix Cookies
• Easy Cake Mix Cakes
• Cake Mix Bars and Brownies
• Cake Mix Quick Breads
• See my Cake Mix Muffins Master List

That's it for this post, friends.

Thanks so much for stopping by! If you make these muffins and enjoy them, please consider leaving a comment or review. Before you go, why not pin some photos to your Pinterest boards?

👩‍🍳 About the Baker

If there’s one thing you should know about me, it’s this: I don’t give up in the kitchen.

I might start with a plan—usually a very good one—but somewhere along the way, something’s missing, something goes wrong, or something just doesn’t turn out the way I expected. And instead of tossing in the towel, I pivot.

That’s the heart behind Out of the Box Baking.

It’s about looking at what you have, not what you don’t. It’s about getting creative, making adjustments, and trusting that something wonderful can still come together—even if it looks different than you imagined.

Some of my best recipes (including these muffins!) were born out of those “well, now what?” moments.

So if you’ve ever opened your pantry and realized you’re missing an ingredient, you’re in the right place. We’re going to make something delicious anyway.