1️⃣ Preheat & Prep: Preheat oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper.
2️⃣ Mix the Base: In a large bowl, cream together peanut butter, softened butter, granulated sugar, and brown sugar until fluffy.
3️⃣ Add Wet Ingredients: Mix in eggs one at a time, followed by vanilla extract.
4️⃣ Combine Dry & Wet Ingredients: In a separate bowl, whisk together flour, baking powder, and salt. Gradually fold it into the wet mixture until just combined.
5️⃣ Spread the Batter: Pour batter into the prepared pan, smoothing it evenly.
6️⃣ Swirl in the Jelly: Drop spoonfuls of jelly on top, then use a knife to swirl it into the batter.
7️⃣ Bake: Bake for 25-30 minutes, until the edges are golden and a toothpick inserted comes out clean.
8️⃣ Cool & Drizzle: Let it cool, then drizzle melted peanut butter over the top. Slice and serve!