There’s something quietly celebratory about a coffee cake that’s equal parts tender cake and crunchy streusel. This version layers buttery graham cracker streusel with a packaged yellow cake base for speed, then finishes with a simple powdered sugar glaze. It’s the kind of thing I make when I want a show-stopping weekend treat without a full day of baking.

The technique is straightforward: prepare the cake batter, layer half, sprinkle streusel, dollop the rest of the batter, top with more streusel, bake, and glaze. The graham cracker crumbs give a deeper toasty note than plain flour crumbs, and the mix of brown sugar and cinnamon makes the streusel feel nostalgic and cozy.

I like serving slices warm with coffee or a tall glass of milk. This recipe is forgiving, which makes it great for weekday breakfasts or a last-minute brunch. Read on for the exact ingredients, step-by-step method, troubleshooting, storage, and a handful of practical tips I use every time.

Shopping List

Before you start, gather the basics and a couple of optional items you might prefer: graham cracker crumbs, packed brown sugar, chopped walnuts or pecans, ground cinnamon, melted butter, a regular-size package of yellow cake mix, confectioners’ sugar, and milk. If you don’t have graham crackers, crushed plain cookies can work in a pinch, but I recommend sticking with the crackers for the flavor balance.

Ingredients

1 1/2 cups graham cracker crumbs — forms the crunchy base of the streusel and adds a toasty flavor.
3/4 cup packed brown sugar — provides deep sweetness and moisture to the streusel.
3/4 cup chopped walnuts or pecans — adds texture and a nutty note; choose your favorite or omit if you need nut-free.
1-1/2 teaspoons ground cinnamon — gives the streusel the warm spice that pairs with the cake.
2/3 cup butter melted — binds the streusel so it crisps up but stays tender.
1 package yellow cake mix regular size — the cake base; follow package directions to save time.
1/2 cup confectioners’ sugar — used for the light glaze that finishes the cake.
1 tablespoon milk — thins the confectioners’ sugar into a pourable glaze.

Cinnamon Streusel Coffee Cake in Steps

Preheat oven to 350°F. Grease a 13×9-inch baking pan.
In a small bowl, combine 1 1/2 cups graham cracker crumbs, 3/4 cup packed brown sugar, 3/4 cup chopped walnuts or pecans, and 1-1/2 teaspoons ground cinnamon. Stir in 2/3 cup melted butter until the mixture is evenly moistened and crumbly. Set aside.
Prepare 1 package yellow cake mix (regular size) according to the package directions.
Pour about half of the prepared cake batter into the greased 13×9-inch pan and spread it into an even layer.
Evenly sprinkle half of the graham cracker mixture over the batter.
Carefully spoon the remaining batter over the streusel layer in dollops; gently spread or smooth to cover as much of the streusel as possible without mixing the layers.
Sprinkle the remaining graham cracker mixture evenly over the top.
Bake at 350°F for 30–40 minutes, or until a toothpick inserted in the center comes out clean.
While the cake cools slightly, make the glaze: in a small bowl, combine 1/2 cup confectioners’ sugar and 1 tablespoon milk; whisk until smooth.
When the cake is warm (not piping hot), drizzle the glaze over the top. Allow the cake to cool until the glaze sets before slicing and serving.

Why This Cinnamon Streusel Coffee Cake Stands Out

This cake hits the sweet spot between convenience and homemade flavor. The yellow cake mix keeps the crumb light and uniform, while the graham cracker streusel brings toasted, caramel notes that contrast the tender cake. Adding chopped walnuts or pecans lifts the texture and gives each bite a satisfying crunch.

It’s also very forgiving in technique. Dolloping the remaining batter over the streusel and smoothing gently keeps the streusel layer intact for a clear crunch layer after baking. The quick glaze is minimal but brightens the top and adds a little shine — enough to make the cake feel finished without masking the streusel.

International Equivalents

If you’re outside the U.S., here are straightforward equivalents and local swaps:

Graham cracker crumbs: Use digestive biscuits or tea biscuits crushed to the same volume.
Yellow cake mix: Substitute with a plain vanilla sponge mix of similar size, or make a simple from-scratch vanilla batter if you prefer.
Confectioners’ sugar: Also labeled icing sugar or powdered sugar — same ingredient, same amount.
Butter measurements: 2/3 cup melted butter is roughly 150 grams if you prefer metric.

Essential Tools for Success

13×9-inch baking pan — the recipe is scaled exactly for this size.
Mixing bowls — at least two: one for streusel, one for cake batter.
Rubber spatula and wooden spoon — for gentle spreading and combining.
Measuring cups and spoons — accurate quantities matter for the streusel ratio.
Toothpick or cake tester — to check doneness at the end of baking.

Things That Go Wrong

Here are common mishaps and how to fix or prevent them.

Streusel sinking into the cake: If you spread the remaining batter too aggressively, the streusel will mix into it. Dollop and gently smooth only enough to cover.
Cake comes out underbaked in the center: Oven temperatures vary. If the toothpick isn’t clean after 40 minutes, give it 5–8 more minutes and check again. Avoid opening the oven repeatedly in the final minutes.
Streusel is too dry or crumbly: Ensure you stir in the full 2/3 cup melted butter so the crumbs are evenly moistened before using.
Glaze runs off the cake: Let the cake cool until just warm; if it’s too hot, the glaze will melt and run thin. If it’s too cool, the glaze won’t spread — warm the cake slightly before drizzling.

Make It Year-Round

This cake adapts easily across seasons. In cooler months, add a pinch more cinnamon or a dash of nutmeg to the streusel for deeper spice. In summer, fold in a thin layer of fresh fruit compote between the batter and streusel (berries or apple compote work well) for brightness. For holiday variations, swap the nuts for chopped crystallized ginger or candied orange peel to give a festive twist.

Pro Tips & Notes

Streusel tricks

Pulse the graham crackers in a food processor for a very fine crumb, or leave them a bit chunkier for extra texture.
Toast the chopped nuts briefly in a skillet to intensify their flavor before adding them to the streusel.

Serving and slicing

Allow the glaze to set before slicing for cleaner cuts. Warm slices are lovely, but a slightly cooled cake slices neater.
Serve with coffee, tea, or a dollop of lightly sweetened whipped cream for an extra indulgent touch.

Dietary notes

To make it nut-free, omit the walnuts/pecans; increase graham crumbs slightly or add sunflower seed pieces if you want texture.
If you prefer less sugar in the streusel, reduce the brown sugar to taste, but keep proportions so the streusel still binds with the melted butter.

Refrigerate, Freeze, Reheat

Storage is simple:

Room temperature: Cover the cake tightly and keep at room temperature for up to 2 days.
Refrigerate: Store in an airtight container for up to 5 days. Bring to room temperature or warm briefly before serving to regain some tenderness.
Freeze: Wrap individual slices in plastic wrap and then foil, or place the whole cooled cake (without glaze) in a freezer-safe container. Freeze up to 3 months. Thaw overnight in the refrigerator and warm in a low oven (300°F) to refresh.
Reheat: Warm individual slices in a microwave for 12–20 seconds, or in a 325°F oven for 8–12 minutes until warmed through. If glazed, warm gently so the glaze doesn’t melt away completely.

Handy Q&A

Can I make this in a different pan size? You can, but baking time will change. A smaller, deeper pan will need more time; a larger pan will need less. The recipe is optimized for a 13×9-inch pan.
Can I use a different cake mix? Yes. A white or butter cake mix will work; the yellow mix gives a classic flavor. If you use a denser mix, watch doneness closely.
Can I make the streusel ahead? Absolutely. Make the streusel up to a day ahead and keep it covered at room temperature; stir in the melted butter before layering if you prefer it freshly moistened.
Why use graham cracker crumbs instead of flour? Graham crumbs give a distinct toasted, slightly sweet flavor and more crunch than a plain flour streusel.

Hungry for More?

If you enjoyed this one, try swapping the graham crumbs for a crunchy oat streusel and adding lemon glaze for a lighter spring variation. For a more decadent version, sprinkle a handful of mini chocolate chips over the streusel before baking. I post new, approachable recipes every week — from quick breakfasts to relaxed Sunday desserts — so come back for the next one.

Happy baking. Take your time with the layers, watch the center for doneness, and enjoy that first warm slice straight from the pan.

Cinnamon Streusel Coffee Cake Recipe

A quick cinnamon streusel coffee cake made with yellow cake mix and a graham cracker-walnut streusel, finished with a simple confectioners' sugar glaze.

Print Recipe Pin Recipe

Prep Time 20

Cook Time 40

Total Time 1

Servings: 16 servings

Course: Dessert

Ingredients Equipment Method Notes

Ingredients

1 1/2 cupsgraham cracker crumbs
3/4 cuppacked brown sugar
3/4 cupchopped walnutsor pecans
1-1/2 teaspoonsground cinnamon
2/3 cupbuttermelted
1 packageyellow cake mixregular size
1/2 cupconfectioners' sugar
1 tablespoonmilk

Equipment

13x9-inch baking pan
Mixing Bowls
Whisk
Spoon
Measuring Cups

Method

Instructions

Preheat oven to 350°F. Grease a 13x9-inch baking pan.
In a small bowl, combine 1 1/2 cups graham cracker crumbs, 3/4 cup packed brown sugar, 3/4 cup chopped walnuts or pecans, and 1-1/2 teaspoons ground cinnamon. Stir in 2/3 cup melted butter until the mixture is evenly moistened and crumbly. Set aside.
Prepare 1 package yellow cake mix (regular size) according to the package directions.
Pour about half of the prepared cake batter into the greased 13x9-inch pan and spread it into an even layer.
Evenly sprinkle half of the graham cracker mixture over the batter.
Carefully spoon the remaining batter over the streusel layer in dollops; gently spread or smooth to cover as much of the streusel as possible without mixing the layers.
Sprinkle the remaining graham cracker mixture evenly over the top.
Bake at 350°F for 30–40 minutes, or until a toothpick inserted in the center comes out clean.
While the cake cools slightly, make the glaze: in a small bowl, combine 1/2 cup confectioners' sugar and 1 tablespoon milk; whisk until smooth.
When the cake is warm (not piping hot), drizzle the glaze over the top. Allow the cake to cool until the glaze sets before slicing and serving.

Notes

Notes
For my international readers, if you don't have graham crackers for the streusel, digestive biscuits work just as well. Basically, just try to find a sweet simple cracker.