Cinnamon Apple Snack Cake
with a Crackly Sugar Top
“Cake that needs no occasion.”
This is the cake for a couple of apples going soft in the fruit bowl and fifteen spare minutes: no mixer, no frosting, no occasion. It goes into the oven in one bowl and comes out with a crackly cinnamon-sugar crust that stands in for any topping.
Snack cake is a proud old category: whisked by hand, baked in a square pan, cut into squares and eaten out of hand. This one uses two textures of apple: one grated straight into the batter, where it disappears and keeps the crumb moist for days, and two diced small for soft pockets of fruit.
The promise: 15 minutes of whisking, 40 minutes in the oven, 20 to cool — a moist, plainly good cake that keeps on the counter for three days.

How to make it
View ingredient overview

🧂 Ingredient notes & easy swaps
🍳 What you actually need (equipment)
Heat the oven to 350°F (175°C) and line an 8x8-inch (20 cm) square pan with parchment, leaving overhang on two sides for lifting the cake out.
Whisk the wet. In the big bowl, whisk the eggs, both sugars, oil and vanilla until smooth and glossy, about a minute.
Add the apples. Grate the first apple on the large holes of a box grater straight into the bowl (skin and all), then stir in the diced apples until everything is coated.
Fold in the dry. Add the flour, cinnamon, baking soda and salt, and fold just until no dry streaks remain. The batter will be thick and chunky — that is correct.
Top and bake. Spread into the pan, sprinkle the cinnamon-sugar evenly over the whole surface, and bake 38 to 42 minutes, until a toothpick in the center comes out clean and the top is crackled.
Cool 20 minutes in the pan so the crumb sets, then lift out by the parchment and cut into 9 squares. Dust with powdered sugar if you like; the cinnamon-sugar crust is enough on its own.
✅ How to know it's done
A toothpick in the center comes out clean or with a moist crumb (apple pieces don't count — re-test if you hit one), the top is crackled and golden, and the edges have pulled slightly from the parchment. If the center dips when the pan is nudged, five more minutes.
💡 Practical tips (and what not to do)
- Grate one apple, dice the rest. The grated apple melts into the crumb and keeps the cake moist for days; the diced ones stay as little jammy pockets. Two textures from one fruit bowl.
- Don't skip the cinnamon-sugar topping — the sugar melts and re-sets in the oven into a thin, crackly crust, and that crust is the frosting.
- Thick batter is right. This looks more like apples held together by batter than batter with apples in it. Resist adding liquid; the apples release plenty as they bake.
- It's better the next day — the apple moisture migrates overnight and the crumb turns almost pudding-tender.
- Double it in a 9x13 for potlucks — same temperature, 45 to 50 minutes, and it travels in its own pan.
🔁 Easy variations (budget · lighter · kids · extra flavor)
💛✨ Flavor boost
The grated apple. Diced apples alone leave the cake itself dry-ish around the fruit; one apple grated on the box grater disappears completely into the batter and releases its juice into the crumb as it bakes. It's the same principle that makes carrot cake moist — grated produce as an ingredient, not just an add-in.
🍎 What Goes Well With It
- A glass of cold milk in the afternoon.
- Coffee or black tea — it works as a coffee cake.
- A scoop of vanilla ice cream on a warm square turns it into dessert.
- Wrapped squares in lunchboxes — with no frosting there is nothing to smear.
📦 Storage & Freezer Notes
- Counter: covered, 3 days — better on day two as the apple moisture settles into the crumb.
- Fridge: up to 5 days; bring squares to room temperature or warm them 10 seconds in the microwave, since cold oil cake tastes flat.
- Freezer: individually wrapped squares keep 2 months — thaw on the counter for an hour or microwave 20 seconds.
🧒 Serving Ideas for Kids
- The cinnamon-sugar sprinkle is a good job to hand over — it is hard to get wrong.
- A square in a napkin needs no plate or fork, which makes it a good after-school snack.
- A warm square with vanilla ice cream is close to apple pie in a fraction of the work.
❓ Quick answers
Can I use applesauce instead of fresh apples?
Why no butter or frosting?
Can I bake it in a loaf pan?
My apples released water and the middle seems damp. What happened?
🥗 Nutrition, roughly: about 290 calories per square with 4 g protein, 42 g carbs and 12 g fat. Estimates only; brands, cuts and portion sizes change the numbers.