This Krusteaz Cinnamon Swirl Crumb Cake is a tender, buttery coffee cake with a deep cinnamon ribbon running through the middle and a generous, crunchy streusel topping. It’s a simple, reliable recipe that uses the classic boxed mix as a base but adds a few fresh ingredients to elevate the texture and flavor, making it taste almost homemade. The combination of a moist crumb, warm spice, and sweet crumble makes it perfect for breakfast, brunch, or an afternoon snack.
Ingredients
- 1 box (16.5 oz / 468 g) Krusteaz Cinnamon Swirl Crumb Cake Mix
- 1/2 cup (1 stick / 113 g) unsalted butter, melted and slightly cooled
- 2 large eggs, room temperature
- 2/3 cup (160 ml) water
- 1 teaspoon vanilla extract (optional)
- 1/2 cup (60 g) chopped pecans or walnuts (optional, for topping)
Instructions
- Preheat your oven to 375°F (190°C). Grease a 9-inch (23 cm) square baking pan or line it with parchment paper for easy removal.
- Open the Krusteaz box and separate the contents: you will have a bag of crumb topping, a bag of cinnamon swirl filling, and a bag of cake mix. Set the crumb topping and cinnamon swirl aside.
- In a large mixing bowl, combine the cake mix, melted butter, eggs, water, and vanilla extract (if using). Mix with a spoon or electric mixer on low speed until just combined, about 30 seconds. The batter will be thick and slightly lumpy; do not overmix.
- Spread half of the batter evenly into the prepared pan. It will be a thin layer.
- Squeeze the cinnamon swirl filling from its packet over the batter. Use a butter knife or spatula to gently swirl it into the batter, creating a marbled effect. You don’t need to be thorough—just a few swirls.
- Carefully spread the remaining batter over the cinnamon layer. It’s easiest to drop spoonfuls over the top and then gently spread them together.
- In a small bowl, combine the crumb topping with the chopped nuts (if using). Sprinkle this mixture evenly over the top of the cake.
- Bake for 40–45 minutes, or until a toothpick inserted into the center comes out clean (a few moist crumbs are okay, but no wet batter). The top should be golden brown.
- Place the pan on a wire rack and let the cake cool for at least 15 minutes before slicing. Serve warm or at room temperature.
Tips
- Don’t overmix the batter. Overmixing can make the cake tough. Mix just until the dry ingredients are moistened—a few lumps are fine.
- Layer the batter carefully. When adding the second half of the batter over the cinnamon swirl, use a spatula to gently spread it. If you press too hard, you’ll disturb the swirl and mix it into the top layer, which is fine but less pretty.
- Check for doneness early. Ovens vary. Start checking at 35 minutes. If the top is browning too quickly, loosely cover the pan with foil for the last 10 minutes.
- Let it cool before cutting. The crumb topping is soft when hot. Cooling for at least 15 minutes helps it set, so your slices stay intact.
Serving Suggestions
This crumb cake is delicious on its own, but you can make it even more special. Serve it warm with a dollop of whipped cream or a scoop of vanilla ice cream for dessert. For brunch, pair it with fresh fruit, scrambled eggs, and a cup of coffee or tea. A light dusting of powdered sugar just before serving adds a pretty finish.
Variations
- Apple Cinnamon: Fold 1 cup (about 1 medium) of finely diced peeled apple into the batter before layering. You may need to add 2–3 minutes to the baking time.
- Pumpkin Spice: Replace the water with 1/2 cup (120 ml) pumpkin puree and 1/4 cup (60 ml) milk (or additional water). Add 1 teaspoon pumpkin pie spice to the batter. Bake as directed.
- Chocolate Chip: Stir 1/2 cup (90 g) mini chocolate chips into the crumb topping before sprinkling over the cake. The chips will melt slightly and create a chocolatey crunch.
- Glaze: Whisk 1 cup (120 g) powdered sugar with 2–3 tablespoons milk and 1/2 teaspoon vanilla extract. Drizzle over the cooled cake for an extra sweet touch.
Storage and Reheating
Store leftover crumb cake in an airtight container at room temperature for up to 3 days. The topping may soften slightly, but it will still taste great. For longer storage, wrap the cake (or individual slices) tightly in plastic wrap and then foil, and freeze for up to 3 months. Thaw overnight in the refrigerator or at room temperature. To reheat, place a slice on a microwave-safe plate and heat for 15–20 seconds, or warm in a 300°F (150°C) oven for 5–8 minutes to revive the crisp topping.
Frequently Asked Questions
Can I use a different size pan? Yes, you can use a 9-inch round pan or an 8-inch square pan. If using an 8-inch pan, the cake will be thicker and may need 5–10 extra minutes of baking. A 9×13-inch pan will produce a thinner cake that bakes faster—start checking at 25 minutes.
Can I make this cake dairy-free? Yes. Substitute the butter with a plant-based butter or margarine that has at least 80% fat content. The water and eggs remain the same. The texture will be slightly different but still delicious.
Why is my crumb topping sinking into the cake? This can happen if the batter is too thin or if you sprinkle the topping on before the cake has begun to set. Make sure you don’t overmix the batter (which can make it runny), and try sprinkling the topping after the cake has baked for 10 minutes—this helps the topping stay on top.
Can I use the Krusteaz mix without the extra butter and eggs? The box directions usually call for water only, but adding butter and eggs makes the cake richer and more tender. If you follow the box directions, the cake will be lighter and less moist. For best results, use the additions in this recipe.
Can I add fresh fruit to the batter? Yes, berries (blueberries or raspberries) work well. Toss them in a little flour to prevent sinking, and fold them into the batter gently. If using frozen berries, do not thaw them first—just fold them in frozen, and increase baking time by 5 minutes.
Can I double this recipe? Absolutely. Double all ingredients and bake in a 9×13-inch pan. The baking time will be similar, but start checking at 40 minutes. You may need to cover the top with foil if it browns too quickly.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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