Prepare the workspace: Line a work surface with parchment paper and gather all ingredients. Chill a mixing bowl and beaters in the freezer for 10 minutes before starting the crust—this keeps butter cold and ensures a flaky texture.

Make the pie crust dough (10 minutes prep): In a medium bowl, whisk together 1 cup all-purpose flour, 1/4 cup granulated sugar, and 1/2 teaspoon salt. Add 6 tablespoons cold unsalted butter cut into small cubes. Using a pastry cutter or two forks, work the butter into the flour mixture until it resembles coarse breadcrumbs with pea-sized pieces of butter visible throughout. This texture is essential—it creates flaky layers. Checkpoint: You know the texture is right when most butter pieces are the size of small peas and you see no large clumps.

Hydrate the dough (5 minutes): Sprinkle ice water over the mixture one tablespoon at a time, gently tossing with a fork after each addition. Add only enough water until the dough just begins to hold together when squeezed—do not overwork it. The dough should feel slightly dry but clump when pressed. Checkpoint: When you squeeze a handful, it should hold shape without being wet or sticky.

Chill the dough (30 minutes minimum, or up to 2 hours): Form dough into a disk, wrap tightly in plastic wrap, and refrigerate for at least 30 minutes. Cold dough is easier to work with and produces a crispier crust. If refrigerating longer than 30 minutes, remove from the fridge 5 minutes before rolling to soften slightly.

Preheat oven and prepare tins (5 minutes): Position oven rack to the middle setting. Preheat oven to 375°F for 15 minutes. Lightly butter six 4-inch tartlet pans with removable bottoms or a standard 6-cup muffin tin. If using tartlet pans, place them on a large baking sheet for easy handling.

Roll and fit the crust (8 minutes): Remove chilled dough from fridge and let it sit for 2 minutes. On a lightly floured surface, roll dough to 1/8-inch thickness. Using a 5-inch round cutter or small bowl as a guide, cut six circles from the dough. Carefully lift each circle and press it into a prepared tartlet pan or muffin cup, gently pressing the dough up the sides without tearing. Trim any excess dough flush with the rim. Checkpoint: Dough should line the bottom and sides evenly with no thin spots or holes.

Blind bake the shells (12 minutes): Using a fork, prick the bottom of each crust 4 to 5 times to prevent puffing during baking. Cut six small squares of parchment paper or aluminum foil and press each gently into a shell. Add a handful of pie weights, dried beans, or uncooked rice to each to hold the parchment down (this prevents the crust from puffing up). Place the baking sheet in the preheated oven and bake for 10 minutes. Remove parchment and weights, then bake for an additional 2 minutes until the bottoms are set and very lightly golden—do not overbake or the edges will be too brown. Checkpoint: The crust should be pale golden and feel dry to the touch. If it looks wet or pale white, bake 1 minute more.

Cool the crusts (10 minutes): Remove baking sheet from oven and let crusts cool on the sheet for 5 minutes, then transfer individual pies in their pans to a wire rack to cool completely. Do not remove pies from pans yet; they are still fragile.

Make the peanut butter filling (8 minutes): While crusts cool, add 1 cup creamy peanut butter, 1/2 cup granulated sugar, and 1/4 cup packed light brown sugar to a medium bowl. Using an electric mixer on medium speed, beat for 2 minutes until the mixture is light, fluffy, and pale brown in color. This beating incorporates air and creates a lighter texture. Checkpoint: The mixture should look noticeably lighter in color and slightly increased in volume.

Add eggs to filling (4 minutes): Reduce mixer speed to low. Add 2 large eggs one at a time, beating after each addition for about 30 seconds until fully incorporated. Scrape down the bowl with a spatula between additions to ensure even mixing. Do not overmix or the filling may become grainy. Checkpoint: After adding both eggs, the filling should be smooth with no visible egg streaks or lumps.

Finish the filling (3 minutes): With mixer on low, add 1/4 cup heavy cream, 1 teaspoon vanilla extract, and 1/4 teaspoon salt. Mix for 30 seconds until just combined. The filling will be thick and creamy. Do not overmix. Checkpoint: The filling should be uniform in color with no swirls or streaks of unmixed ingredients.

Lower oven temperature (2 minutes): After the crusts have cooled, preheat oven to 350°F. The lower temperature ensures the filling bakes gently without the edges browning or the filling curdling.

Fill the pie shells (5 minutes): Divide the peanut butter filling evenly among the six cooled crusts, filling each about three-quarters full (approximately 3.5 tablespoons per pie). Leave about 1/4 inch of space at the rim to allow for slight expansion. Use a small spoon or ice cream scoop for even distribution. Checkpoint: All pies should have equal amounts of filling, and none should overflow the edges.

Bake the pies (18 minutes): Place the baking sheet with filled pies in the preheated 350°F oven on the middle rack. Bake for 15 to 18 minutes. The filling should appear set around the edges but still slightly jiggly (about a 1-inch circle) in the very center when gently shaken. A gentle jiggle indicates carryover cooking will occur and the filling will set to perfect creaminess as it cools. If the center looks completely liquid, bake 2 more minutes and check again. Checkpoint: The filling should be mostly set with only a small jiggly center. The crust edges should be light golden. If the edges are browning too quickly, tent loosely with foil for the last 5 minutes.

Cool the baked pies (at least 2 hours): Remove the baking sheet from the oven and place it on a wire rack. Let the pies cool at room temperature for 30 minutes until no longer hot to the touch. Then transfer them—still in their pans—to the refrigerator for at least 1.5 hours until completely chilled and firm. Cold filling is easier to remove from pans and has better texture. Checkpoint: Pies are ready when completely cold and the filling no longer jiggles when gently shaken. You can run a small thin knife around the edges to help release them if needed.

Prepare the chocolate topping (5 minutes): Place 1/2 cup semi-sweet chocolate chips and 1 tablespoon coconut oil or vegetable shortening in a microwave-safe bowl. Microwave on 50% power in 30-second intervals, stirring thoroughly between each interval. Continue until the chocolate is completely melted and smooth (typically 2 to 3 intervals, or 60 to 90 seconds total). Do not overheat or the chocolate will become thick and grainy. Checkpoint: Chocolate should be completely smooth with no lumps. If it seems too thick, stir in an additional 1/2 teaspoon coconut oil.

Remove pies from pans (5 minutes): Once the peanut butter filling is fully set and cold, carefully run a thin knife or small offset spatula around the inside edge of each tartlet pan, loosening the pie from the sides. Gently push up the removable bottom of each tartlet pan to release the pie, or invert the muffin tin carefully if using a muffin pan. Place cooled pies on a parchment-lined baking sheet or serving plate. If a pie sticks, return it to the refrigerator for 10 minutes to firm the filling, then try again.

Drizzle with chocolate (3 minutes): Working with one pie at a time, spoon or drizzle the warm melted chocolate over the top of each cooled pie, creating a decorative pattern. You can drizzle back and forth across the top, create concentric circles, or cover the entire top—whichever you prefer. Use approximately 1.5 teaspoons of chocolate per pie. Checkpoint: Chocolate should be distributed evenly across the top with no large bare spots.

Add garnish (2 minutes): While the chocolate is still warm and slightly tacky, sprinkle each pie with a small pinch of chopped roasted peanuts (approximately 1/2 teaspoon per pie). The warm chocolate helps the peanuts adhere. Dust very lightly with powdered sugar using a fine-mesh sieve—just a whisper of powder creates an elegant finish. Checkpoint: Garnishes should be evenly distributed and powdered sugar should be barely visible, not caked on.

Set the chocolate (15 minutes): Place the decorated pies in the refrigerator for 15 minutes to allow the chocolate topping to set completely and become firm. Once set, the chocolate will crack slightly when you bite into it, creating a nice textural contrast with the creamy filling. Checkpoint: Gently tap the chocolate—it should be firm and no longer sticky.

Final chill before serving (optional, up to 24 hours): For the best flavor and texture, store the finished pies in the refrigerator for up to 24 hours before serving. This allows all the flavors to meld and the filling to reach its creamiest, richest texture. Serve cold or at room temperature within 1 hour of removal from the fridge.