Why it works: Milk and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓
Frosted Peanut Butter Squares
Ingredients
Directions
Prepare
Heat oven to 350 degrees.
Remove wrappers from candies and chop candies into pieces.
Grease a 13x9x2-inch baking pan.
Make and bake the batter
In a small mixer bowl, beat butter, peanut butter, sugar and brown sugar until well blended.
Gradually add milk, eggs, and vanilla, beating until smooth and well blended.
Stir together flour, baking soda and salt, then add to butter mixture and beat until well blended.
Spread batter into prepared pan.
Bake 18 to 20 minutes or until a wooden pick inserted in center comes out clean.
Make the topping and finish
Cool completely in pan on wire rack.
In a medium microwave-safe bowl, place chocolate chips, peanut butter and butter.
Microwave at HIGH for 1 minute; stir.
If necessary, microwave at HIGH for an additional 15 seconds at a time, stirring after each addition, until the chips are melted.
Add powdered sugar; whisk until smooth and of spreading consistency.
Spread Chocolate Peanut Butter Topping over cake.
Sprinkle candy pieces over top.
Cut into squares.
Nutrition, whole recipe (rough)
Counts 9 of 10 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.
What these numbers assume: 9 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Flour | 1 cup (125g) all-purpose | 455 |
| Peanut | 1 oz (28g) | 161 |
| Chocolate | 1 oz (28g) semisweet | 155 |
| Milk | 1 cup (244ml) whole | 149 |
| Butter | 1 tbsp (14g) | 102 |
| Egg | 1 large egg (50g) | 78 |
| Sugar | 1 tbsp (12.5g) granulated | 49 |
| Vanilla | 1 tsp extract (4ml) | 12 |
| Salt | 1 tsp (6g) | 0 |
| Topping | not in our table | 0 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
Steps grouped into stages for easier reading; the method is the source's own.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
-
Milk + vanillatop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
-
Vanilla + chocolatetop 5% of all pairsSmell alikemoderateCooked together10,020 recipes
Shared aroma: sotolon (curry, maple).
-
Peanut + chocolatetop 6% of all pairsSmell alikemoderateCooked together1,279 recipes
Shared aroma: 2-ethyl-3,6-dimethylpyrazine (roasted, nutty).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Bind the batter and add structure as they set during baking.
- Flour
- Provides the structure that holds the squares together once baked.
- Butter or margarine
- Adds fat for tenderness and richness in the batter and topping.
- Peanut butter
- Adds peanut flavor and fat, giving the batter a moist, rich texture.
- Baking soda
- Reacts with the batter to help it rise and become light.
- Sugar
- Sweetens the batter and helps it brown and stay moist.
The step that matters
Cool completely in the pan before frosting. The cake is soft and fragile while warm; spreading the topping before it cools would melt the frosting and tear the squares. Full cooling lets the structure set.
Swap the peanut
How well each one fits the dish's main ingredients (butter, sugar, milk, egg, vanilla, flour, chocolate):
- Almondfits better
- Hazelnutfits better
- Chestnutfits better
- Peanutthe original
Fit is the average pairing score against butter, sugar, milk, egg, vanilla, flour, chocolate. Candidates are from the same food group and used in at least 100 recipes.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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