Ingredients:
| Ingredient | Quantity |
| Dutch-processed cocoa | 1/3 cup |
| Instant espresso | 1 ½ teaspoons |
| Boiling water | 1/2 cup + 2 tablespoons |
| Unsweetened chocolate, finely chopped | 2 ounces |
| Unsalted butter, melted | 4 tablespoons (1/2 stick) |
| Vegetable oil | 1/2 cup + 2 tablespoons |
| Large eggs | 2 |
| Large egg yolks | 2 |
| Vanilla extract | 2 teaspoons |
| Sugar | 2 ½ cups |
| Unbleached all-purpose flour | 1 ¾ cups |
| Table salt | 3/4 teaspoon |
| “Fun-size” Snickers, coarsely chopped | 16 |
