These easy peanut butter and jelly cupcakes combine a tender yellow cake, creamy peanut butter, a hidden spoonful of strawberry or grape preserves, and rich peanut-butter frosting. Made with a boxed cake mix, they take about 20–25 minutes to prepare, bake in 18–22 minutes, and make approximately 12 cupcakes from start to finish in about 45–55 minutes, including cooling and frosting.
Every bite tastes like the classic peanut butter and jelly sandwich in celebratory cupcake form. The soft cake brings gentle vanilla sweetness, the jelly adds a bright fruity center, and the fluffy peanut-butter buttercream creates a salty-sweet finish that children and adults will love.
Jump to RecipeWhy You’ll Love This Recipe
Peanut butter and jelly cupcakes are a cheerful dessert for birthdays, school celebrations, bake sales, family parties, or an ordinary afternoon when a familiar flavor sounds especially good. They look bakery-worthy but begin with a convenient boxed cake mix, so there is no need to measure flour, baking powder, or several separate dry ingredients.
The recipe also gives you a delightful surprise in the middle. Instead of mixing the jelly throughout the batter, you spoon it into each cupcake so every serving has a distinct fruity center surrounded by peanut-butter cake.
- Quick preparation: The batter comes together in one bowl.
- Classic flavor: Strawberry and grape preserves both pair beautifully with peanut butter.
- Reliable texture: A boxed yellow or white cake mix makes soft, tender cupcakes.
- Party-ready finish: Peanut-butter frosting and a jelly drizzle make each cupcake instantly recognizable.
If you enjoy this sweet-and-salty combination in other forms, you may also like our peanut butter and jelly monkey bread, another fun treat built around the same beloved flavors.
Ingredients You’ll Need
Start with one box of yellow or white cake mix, about 15.25 ounces. You will also need three large eggs, one-half cup neutral vegetable oil, one cup water, and one-half cup creamy peanut butter for the cupcake batter.
For the filling, measure one-half cup strawberry or grape jelly or preserves. You will use approximately one teaspoon per cupcake, so the remaining amount can be used for decorative drizzles or saved for toast.
The frosting uses one-half cup softened unsalted butter, three-fourths cup creamy peanut butter, two cups confectioners’ sugar, one teaspoon vanilla extract, and two to three tablespoons milk or heavy cream. A pinch of salt is optional, but it can sharpen the peanut flavor and balance the sweetness.
- Choose thick preserves instead of a very runny jelly.
- Use creamy, conventional peanut butter for a stable batter and buttercream.
- Set the butter out early enough to soften, but do not melt it.
- Line all 12 muffin cups before mixing so the batter can be portioned promptly.
For another fruit-forward dessert idea, keep our pineapple banana dessert in mind when you are planning a larger sweets table.
How to Make It Step-by-Step
Step 1: Heat the oven to 350°F (175°C) and line a 12-cup muffin pan with paper liners. Preparing the pan first keeps the process moving and helps prevent the batter from standing too long after it is mixed.
Step 2: Add the cake mix, eggs, oil, water, and one-half cup peanut butter to a large mixing bowl. Beat the mixture until smooth, following the mixing time recommended on the cake-mix package; stop once the batter is evenly combined to help preserve a tender crumb.
Step 3: Fill each paper liner about halfway with batter. Use a spoon or cookie scoop for more even portions, and keep the jelly away from the paper sides so it remains tucked inside the cake.
Step 4: Add approximately one teaspoon of jelly to the center of each cupcake. Thick strawberry preserves offer a bright berry flavor, while grape jelly gives the cupcakes the most traditional sandwich-inspired taste.
Step 5: Cover the jelly with enough remaining batter to bring each liner to about two-thirds full. Do not overfill the cups, because the cupcakes need room to rise and excess batter can encourage the filling to leak.
Step 6: Bake for 18–22 minutes, watching for lightly springy tops. Test the cake portion with a toothpick rather than inserting it directly into the jelly, since the filling will remain soft and may make a properly baked cupcake appear wet.
Step 7: Leave the cupcakes in the pan for 5 minutes after baking, then transfer them to a wire rack. Cool them completely before decorating; even slightly warm cupcakes can cause the frosting to soften and slide.
Step 8: Make the frosting by beating the softened butter and peanut butter until creamy. Gradually add the confectioners’ sugar, then mix in the vanilla, optional salt, and enough milk or cream to create a smooth, spreadable consistency.
Step 9: Frost the cooled cupcakes with a small spatula or piping bag. Add a small spoonful or thin drizzle of jelly to the top, using the same flavor as the center or creating a strawberry-and-grape assortment.
Pro Tips for Perfect Cupcakes
Thick preserves are the most important choice for a tidy center. If the jelly is loose, it may sink through the batter or escape around the liner while baking; preserves with visible fruit pieces generally stay in place more successfully.
Keep the batter level at roughly two-thirds full after the jelly is covered. This amount leaves room for the cake to rise into a rounded top without spilling over the pan.
Conventional creamy peanut butter is preferable to natural peanut butter for this recipe. Natural varieties can separate, which may affect the consistency of both the batter and the frosting.
For a neat frosting finish, make sure the cupcakes are fully cool and the buttercream is spreadable but not loose. If it seems too thick, add the milk or heavy cream gradually, one small splash at a time; if it becomes too soft, a little additional confectioners’ sugar can help.
For a slightly different presentation, you can swirl one-half cup jelly into the batter instead of creating individual centers. The result will have ribbons of fruit throughout rather than a defined filling, while the traditional method gives each cupcake a clear peanut-butter-and-jelly surprise.
When planning a dessert assortment, these cupcakes pair nicely with a crisp cookie such as our brown sugar butter cookies. The caramel-like cookie flavor provides a pleasant contrast to the fruity jelly.
Decorating and Serving Ideas
A simple swirl of peanut-butter frosting is enough to make these cupcakes inviting, but a jelly accent makes the theme immediately clear. Spoon a small dot of preserves onto each frosted cupcake, or warm the jelly very gently until it is loose enough to drizzle in a thin line.
For a bake-sale display, use strawberry preserves in every cupcake and add a small berry-colored dot on top. For a nostalgic lunchbox feel, make half the batch with strawberry and half with grape, then mark the flavors with matching jelly decorations.
Serve the cupcakes at room temperature for the softest cake and creamiest frosting. They are especially good with cold milk, coffee, tea, or a scoop of vanilla ice cream when served as a plated dessert.
Although the recipe is sweet, its peanut-butter flavor can inspire a playful menu. If you are preparing a full gathering with savory dishes too, our garlic butter portobello mushrooms make a rich meatless side for a casual buffet.
Storage and Make-Ahead Notes
Once frosted, keep the cupcakes covered so the cake does not dry out and the frosting does not absorb refrigerator odors. They are best enjoyed fresh, but preparing them earlier in the day gives the flavors time to settle while preserving a soft texture.
If refrigeration is necessary, place the covered cupcakes in the refrigerator and let them stand for a short time before serving. The frosting will become firmer when cold, so allowing the cupcakes to soften slightly makes the peanut buttercream creamier.
You can bake the cupcakes, cool them completely, and frost them later. Wait until the cakes are fully cool before storing or decorating, and add the jelly garnish close to serving time for the brightest appearance.
Keep peanut allergies in mind when serving these cupcakes. Clearly label the dessert and avoid placing it beside peanut-free items if cross-contact is a concern.
For a savory recipe to balance a sweet-heavy menu, you can also visit our all-purpose buffalo chicken marinade recipe for a bold main-course option.
Easy Peanut Butter and Jelly Cupcakes
Ingredients
Method
- Heat the oven to 350°F (175°C) and line a 12-cup muffin pan with paper liners. Add the cake mix, eggs, vegetable oil, water, and peanut butter to a large bowl, then beat until smooth according to the cake-mix package directions for mixing time.
- Fill each paper liner about halfway with batter. Place approximately 1 teaspoon of strawberry or grape jelly in the center of each cupcake, keeping the filling away from the sides of the liner.
- Spoon the remaining batter over the jelly until each liner is about two-thirds full. Bake for 18–22 minutes, until the tops spring back lightly and a toothpick inserted into the cake portion comes out clean.
- Cool the cupcakes in the pan for 5 minutes, then transfer them to a wire rack. Let them cool completely before frosting so the buttercream stays thick and does not slide.
- Beat the softened butter and peanut butter until creamy. Gradually add the confectioners' sugar, then beat in the vanilla, optional salt, and enough milk or heavy cream to create a smooth, spreadable frosting.
- Frost the completely cooled cupcakes with a knife or piping bag. Finish with a small spoonful or drizzle of additional jelly for a colorful decoration, then serve.
Notes
Final Thoughts
These easy peanut butter and jelly cupcakes deliver the comfort of a classic sandwich with the charm of a homemade dessert. The boxed cake mix keeps preparation practical, while the jelly center and peanut-butter frosting make the finished cupcakes taste special enough for a celebration.
Choose strawberry preserves for a bright berry note or grape jelly for the most familiar peanut-butter-and-jelly flavor. Keep the filling thick, avoid overfilling the liners, and cool the cupcakes completely before frosting for the best results.
With about 12 cupcakes from one batch, this recipe is a dependable choice whenever you need a quick dessert that feels playful, nostalgic, and wonderfully indulgent. Set one aside for yourself before serving, because the first bite of soft peanut-butter cake, fruity jelly, and creamy frosting is hard to resist.