Storage Tips
Store leftover cake covered at room temperature for up to two days If your kitchen is particularly warm or humid move it to the fridge where it will keep for about four days Let refrigerated slices sit out briefly before serving for best texture The baked cake layers can be wrapped tightly and frozen for up to two months Before frosting let them thaw completely at room temperature
Ingredient Substitutions
If you are out of buttermilk you can make your own by stirring a tablespoon of lemon juice or white vinegar into a half cup of milk and letting it sit until thickened Natural style peanut butter works but must be thoroughly stirred to avoid oil separation If you want a nut free treat use sunflower seed butter and swap M and Ms for a safe chocolate candy
A slice of peanut butter cake with M&M’s on top.
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A slice of peanut butter cake with M&M’s on top. | lilicooks.com
Serving Suggestions
Serve generous slices with a cold glass of milk or a scoop of vanilla ice cream For a birthday hit add candles and a colorful sprinkle medley along with the M and Ms The cake can also be baked as cupcakes just reduce the bake time to fifteen to eighteen minutes
Pro Tips
Always work with room temperature ingredients for smoother mixing and even baking
Do not overmix once you add flour to keep the crumb soft and tender
Use only a gentle hand when stirring in M and Ms so their colors do not bleed into the batter
Recipe FAQs
→ How do I ensure the cake stays moist?
Use buttermilk and room-temperature butter for a tender, moist crumb. Avoid over-baking by checking with a toothpick.
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→ Can I use natural peanut butter?
Creamy peanut butter with stabilizers works best to achieve a smooth texture, but natural versions may be used if well stirred.
→ How should I store leftovers?
Keep the cake covered in an airtight container at room temperature for up to two days, or refrigerate for longer freshness.
→ Can different candies be substituted for M&M’s?
Yes, try mini chocolate chips, Reese’s Pieces, or chopped peanut butter cups for a fun variation in flavor and color.
→ How do I achieve a smooth frosting?
Beat the butter and peanut butter well before gradually adding powdered sugar and heavy cream for a fluffy, spreadable consistency.
