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Easy One-Bowl Rustic Apple Crisp Cake with Cinnamon Streusel Topping

By Beginnerbakes Test KitchenReviewed by Beginnerbakes Editorial TeamPublished Apr 24, 2026 · Updated May 12, 2026
American 60 mins beginner-friendlyeasyone-bowlstep-by-stepquickfruitspicedcomfort-foodmorning-bakeapple cakestreusel topping

This easy one-bowl rustic apple crisp cake blends tender, spiced apple chunks into a moist vanilla batter, topped with a crisp cinnamon streusel. Perfect for a quick breakfast, snack, or beginner-friendly baking project.

Easy One-Bowl Rustic Apple Crisp Cake with Cinnamon Streusel Topping
Prep 15 min
Cook 45 min
Total 60 min
Servings 8
Difficulty easy
Cuisine American

Recipe Details

Prep15 min
Cook45 min
Total60 min
Servings8
Difficultyeasy
CuisineAmerican
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Ingredients

Servings 8
  • 2 large apples (such as Granny Smith or Honeycrisp), peeled, cored, and diced
  • 1 teaspoon lemon juice
  • 1 1/2 cups (190g) all-purpose flour
  • 1 teaspoon baking powder
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon ground cinnamon
  • 1/4 teaspoon ground nutmeg
  • 1/4 teaspoon salt
  • 1/2 cup (100g) granulated sugar
  • 1/4 cup (50g) packed light brown sugar
  • 1/2 cup (120ml) vegetable oil
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1/2 cup (120ml) buttermilk (or milk with 1/2 teaspoon vinegar, let sit 5 mins)
  • 1/3 cup (40g) all-purpose flour
  • 1/4 cup (50g) packed light brown sugar
  • 1/2 teaspoon ground cinnamon
  • 3 tablespoons (43g) cold unsalted butter, cut into small pieces

Instructions

  1. Preheat oven to 350°F (175°C). Grease and flour an 8-inch (20cm) square or round cake pan, or line it with parchment paper.
  2. Toss diced apples with lemon juice in a medium bowl to prevent browning. Set aside.
  3. In a large bowl, whisk together flour, baking powder, baking soda, cinnamon, nutmeg, salt, granulated sugar, and brown sugar.
  4. Add vegetable oil, egg, and vanilla extract to the dry ingredients. Pour in the buttermilk.
  5. Gently mix with a wooden spoon or spatula until just combined; small lumps are okay. Avoid overmixing.
  6. Fold diced apples evenly into the batter.
  7. Pour batter into prepared pan and smooth the top.
  8. To make streusel, combine flour, brown sugar, and cinnamon in a small bowl. Add cold butter pieces.
  9. Use fingers or pastry cutter to rub butter into dry ingredients until coarse crumbs form.
  10. Sprinkle streusel topping evenly over batter in the pan.
  11. Bake for 40-45 minutes or until a toothpick inserted into center comes out clean and topping is golden.
  12. Let cake cool in pan on wire rack for at least 15 minutes before slicing.
  13. Serve warm or at room temperature with tea or coffee for a cozy, comforting treat.

Frequently Asked Questions

Reader questions and answers for this recipe will appear here.

This versatile cake can accommodate dietary preferences and ingredient swaps without sacrificing taste or texture:

  • Apples: Substitute with pears or peaches for a different fruity twist while maintaining moisture.
  • Flour: Use gluten-free all-purpose flour blends for gluten-free baking, or whole wheat pastry flour for a nuttier, denser result.
  • Vegetable Oil: Replace with melted coconut oil or mild avocado oil for dairy-free options.
  • Egg: Use flax eggs or commercial egg replacers to make the recipe vegan-friendly.
  • Buttermilk: Substitute with plant-based milk plus vinegar or lemon juice to add acidity necessary for leavening.
  • Sugar: Reduce overall sugar by up to 1/4 cup for less sweetness, or swap with coconut sugar or low-glycemic sweeteners.
  • Butter for Streusel: Use cold plant-based butter for dairy-free or vegan topping alternatives.

These smart ingredient swaps keep the cake moist, flavorful, and perfectly spiced while catering to diverse dietary needs.

Equipment Needed

Gather these essential baking tools for your Easy One-Bowl Rustic Apple Crisp Cake with Cinnamon Streusel Topping to ensure a smooth, beginner-friendly cooking experience:

  • Mixing Bowls: One large bowl for batter and a smaller bowl for apples and streusel preparation.
  • Measuring Cups and Spoons: For precise ingredient measurements ensuring consistent results.
  • Wooden Spoon or Spatula: To gently combine ingredients without overmixing, preserving cake tenderness.
  • 8-inch (20cm) Cake Pan: Square or round, greased and floured or lined with parchment for even baking.
  • Pastry Cutter or Clean Fingers: For cutting cold butter into streusel to create crumbly texture.
  • Knife and Cutting Board: To peel, core, and dice apples evenly for uniform baking.
  • Wire Cooling Rack: Allows even cooling maintaining the crispness of the streusel topping.
  • Oven: Preheated to 350°F (175°C) for optimal baking temperature.

With these tools, even first-time bakers will find this recipe straightforward and enjoyable to make.

Ingredient Prep Notes

Apple Preparation: Opt for firm apple varieties like Granny Smith or Honeycrisp for balanced sweetness and texture. Peel, core, and dice into uniform small pieces so they cook evenly. Toss with lemon juice to preserve color and freshness.

Flour Choices: Use all-purpose flour for best structure and tenderness. For gluten-free options, choose a gluten-free all-purpose flour blend containing xanthan gum.

Buttermilk Alternatives: No buttermilk? Combine regular milk with 1/2 teaspoon vinegar or lemon juice, let it sit 5 mins to thicken, then use as a substitute. Plant-based milks like almond, soy, or oat can be used similarly for dairy-free baking.

Oil Options: Vegetable oil keeps the cake moist. Substitute with light olive oil, sunflower oil, or melted coconut oil for subtle flavor variations.

Sugar Variations: The recipe uses granulated and light brown sugars for sweetness and moisture. Coconut sugar or maple syrup can replace brown sugar, adjusting liquids if using syrup.

Butter for Streusel: Cold unsalted butter creates the best crumbly topping. For dairy-free streusel, use cold coconut oil or plant-based butter alternatives.

Spices: Cinnamon and nutmeg provide warm, cozy flavors. Consider adding a pinch of ground ginger or cloves for extra warming notes in cooler months.

Egg Replacements: For a vegan version, replace egg with a flax egg (1 tbsp ground flaxseed mixed with 3 tbsp water, set 5 mins) or commercial egg replacer.

Oven Note

Preheat your oven to 350°F (175°C) to ensure even baking throughout. Keep the oven door closed during baking to maintain stable heat and help the cake rise properly.

Place your cake pan on the center rack to allow even hot air circulation. If your oven has uneven heating, rotate the pan halfway through baking to ensure uniform browning, especially for the cinnamon streusel topping.

Start checking for doneness around 40 minutes by inserting a toothpick into the center; it should come out clean or with a few moist crumbs. Avoid overbaking to keep the cake moist and tender.

If you suspect your oven’s temperature may fluctuate, consider using an oven thermometer for accuracy, helping you achieve perfect baking results every time.

Following these tips will help you bake a beautifully golden apple crisp cake with a crunchy, flavorful topping.

Easy Upgrade Ideas

Enhance your Easy One-Bowl Rustic Apple Crisp Cake with these simple upgrades that add flavor, texture, or decorative flair while keeping the recipe beginner-friendly:

  • Add Nuts: Fold 1/3 cup chopped walnuts or pecans into the batter or sprinkle over the streusel topping for added crunch.
  • Flavor Twists: Swap vanilla extract for almond extract or add 1 teaspoon orange zest to brighten the flavor.
  • Extra Fruit: Mix in 1/2 cup dried cranberries or raisins with the diced apples for bursts of sweetness.
  • Lemon Glaze: Drizzle a simple glaze made from 1/2 cup powdered sugar mixed with 1-2 tablespoons fresh lemon juice over cooled cake for a lovely finish.
  • Vegan Version: Use a flax egg instead of egg and plant-based milk with vinegar for a vegan-friendly treat.
  • Spice it Up: Add a pinch of ground cloves or ginger alongside cinnamon and nutmeg for extra warmth.
  • Serving Suggestions: Top warm slices with vanilla ice cream or whipped cream for a decadent dessert experience.

Try these easy tweaks to personalize your rustic apple cake while growing your baking confidence!

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