| Method | Duration | Instructions |
|---|---|---|
| Room Temp | 5 days | In an airtight container, layered with parchment between bars. |
| Refrigerator | 1 week | Texture becomes fudgier. Bring to room temp before eating. |
| Freezer | 3 months | Wrap individual bars in plastic, then foil. Thaw overnight in the fridge. |
Recipe Notes & Swaps
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Why “Congo Bar”? This recipe dates to the 1950s. It was named for the Belgian Congo, not the country code. It’s essentially a chocolate chip cookie baked as a bar, with a higher brown sugar ratio for chew.
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Don’t have brown sugar? Make your own: Mix 2 cups white sugar with 2 tablespoons molasses.
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No chocolate chips? Chop a 9oz chocolate bar (semi-sweet or milk) into chunks.
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Nut-free: Omit the walnuts. Add 1 cup of shredded coconut or toffee bits for texture.
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Gluten-free: Substitute a 1:1 gluten-free flour blend (like King Arthur Measure for Measure). Do not use single-flour substitutes (coconut/almond flour).
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The egg yolk trick: The extra yolk adds fat and reduces protein, which inhibits gluten formation. This keeps the bars tender.
Troubleshooting (The “What Went Wrong” Guide)
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