Double Chocolate Fantasy Bars
Fudgy chocolate bars with a crumbly cake-mix crust and topping, gooey chocolate-chip filling sweetened with condensed milk. Rich, indulgent dessert for casual gatherings, potlucks, or anytime you want an easy crowd-pleaser. The two-layer crumb setup delivers textural contrast between crispy edges and chewy center.
Ingredients
Instructions
- 1
Preheat oven to 350 degrees F and grease a 13x9 inch baking pan.
- 2
Combine cake mix, oil, and egg in a large bowl; beat at medium speed until crumbly and stir in nuts.
- 3
Reserve 1-1/2 cups of the crumb mixture; press the remaining crumbs firmly onto the bottom of the prepared pan.
- 4
Combine condensed milk, chocolate chips, vanilla, and salt in a small saucepan over medium heat; cook and stir until chips melt completely.
- 5
Pour the chocolate mixture evenly over the pressed crust.
- 6
Sprinkle the reserved crumb mixture evenly over the chocolate layer.
- 7
Bake 25 to 30 minutes until set; cool completely before cutting into bars.
Tips
Reserve the crumb mixture before pressing the base; this two-layer approach ensures textural contrast and prevents a dense, heavy bar.
Don't overbake: check at 25 minutes. The filling should be set but still have slight give when pressed; it firms up as it cools.
Good to Know
Keep in an airtight container at room temperature for up to 5 days. Avoid direct sunlight and humid environments; bars may soften.
Prepare up to 24 hours ahead; wrap cooled bars individually in parchment and store in an airtight container. Do not freeze (condensed milk filling may separate upon thaw).
Serve at room temperature. Cut into 12-16 bars depending on size preference. Pairs well with cold milk, coffee, or vanilla ice cream.
Common Mistakes
Do not skip the reserved crumb layer to avoid a flat, one-dimensional texture.
Do not overbake to avoid dry, crumbly bars; the filling should jiggle slightly when removed from oven.
Do not use melted chocolate instead of chips with condensed milk to avoid a grainy, separated texture.
Substitutions
Nut-Free Alternatives
General Alternatives
3
FAQ
Can I use a different size pan?
Yes, but thickness will change. An 8x8 inch pan yields thicker bars and may require 2-3 extra minutes baking; a 9x13 inch pan yields thinner bars and may bake 2-3 minutes faster. Watch carefully for doneness.
What if I don't have nuts?
Omit them entirely for a nut-free version. The bars will be slightly softer and less textured. Alternatively, substitute with an equal amount of graham cracker crumbs, shredded coconut, or crushed pretzels for crunch.
How long do baked bars keep at room temperature?
Up to 5 days in an airtight container away from heat and humidity. Beyond that, they may harden or become stale. Individually wrap in parchment for best freshness and easy portioning.