To make praline paste, first spread pecans in a single layer on a baking sheet lined with a silicone baking mat. Set aside.: You will smell the faint toasty note of raw pecan as they warm slightly on the sheet, and arranging them in a single layer ensures even contact when the hot caramel arrives. This step prevents steaming and keeps the nuts crisp once coated, which is important because soft nuts will yield a muddied paste. One common mistake here is crowding the pan, which can lead to uneven caramel coverage, so leave space between pieces when you can.
Pour water and corn syrup into a small, heavyweight saucepan set over medium heat. Add sugar and gently stir with a spoon until sugar is completely dissolved (try not to splash any sugar crystals up on the sides of the pan if you can). Brush down the sides of the pan with a pastry brush and water to remove any stray sugar crystals.: As the mixture warms, you will see it go from cloudy to clear, then begin to bubble steadily. The surface will steam gently, and keeping stray crystals off the sides prevents sudden recrystallization, which can ruin the caramel. If your sugar starts to crystallize on the sides, careful brushing will save the batch; avoid vigorous stirring once boiling starts, or the sugar can seize.
Once sugar is dissolved and begins to boil, stop stirring. Continue to let the sugar boil until it becomes rich amber in color. You can gently swirl the pan if necessary to ensure the sugar caramelizes evenly, just don’t stir it after it starts bubbling.: Watch the color closely, because caramel can move from golden to burnt very quickly. You will notice a deep, toasty aroma as it reaches amber, and that smell is the signal it is almost ready. A frequent error is waiting too long, which will give a bitter taste, so remove from heat as soon as you hit that warm amber tone.
Immediately (and carefully!) pour hot caramelized sugar over top of pecans on baking sheet. Let cool completely, at least 1 hour.: When the molten caramel hits the nuts you will hear a light crackle and see glossy sugar wrapping the pecan surfaces. Cooling solidifies the coating, so be patient and avoid touching until cooled. Don’t try to speed cooling too quickly, because the caramel can become sticky and unset if disturbed.
Break up caramelized nuts into large pieces. Place in a zip top bag. Wrap with a kitchen towel and bang it a few times with a rolling pin or meat pounder until broken up into chunks.: The sound will be satisfying as the brittle shatters into uneven chunks, which is what you want for easier processing. Large pieces minimize dust in your processor and make it straightforward to transform into paste. Avoid over smashing into powder at this stage, which can make the processing take longer and generate heat.
Transfer broken up pieces to a high-powered blender or food processor. Start on reasonably low speed and work your way up, until the caramelized nuts transform into a smooth butter. This might take a while, just be patient with it. Scrape down the sides of the container as needed to ensure everything is mixed smoothly. Transfer to a bowl and set aside. Praline paste will keep in an airtight container at room temperature for up to 1 week.: As the blades work, you will first get crumbs, then a gritty paste, and finally a glossy, spreadable paste as natural oils release. The smell will be intensely nutty and caramelized. A common pitfall is running the machine at too high a speed immediately, which can overheat the paste and make it grainy, so pulse and increase speed gradually while scraping often.
Preheat oven to 350 degrees F.: You will feel warmth from the oven as it comes to temperature, and preheating ensures the crusts set quickly without becoming soggy. Reliable oven temperature is important, because underheated ovens lead to uneven baking. A frequent oversight is skipping preheat, which can lengthen bake times and affect texture.
To make the crusts, grind up cookies and pecans in a food processor until finely ground. Drizzle in butter and pulse until evenly moistened. Press into muffin tins lined with paper cupcake liners. You’ll want about 1 tablespoon of crumbs for each standard-sized muffin cup. Use a flat-bottomed juice glass or tart tamper to press the crumbs firmly in an even layer.: You should smell buttery cookie and warm pecan as you pulse. The crumbs should hold when pressed and form a tidy, compact base. Pressing firmly helps the crust hold together after baking and while you fill the cups. A common mistake is using too little butter, which yields dry, crumbly crusts that fall apart when you try to remove the liners.
Bake crusts for 4 to 6 minutes or until set and edges are barely starting to brown. Remove from oven and let cool completely while you prepare the filling.: The brief bake firms the crust and toasts the nuts slightly, releasing a deeper aroma. Watch for the edges to take a hint of color without burning. If you leave them in too long, the crumbs can become overly crisp and hard, so time this short bake carefully.
For cheesecake filling, combine softened cream cheese, brown sugar, cream, flour, vanilla and salt in a food processor or stand mixer. Mix until completely smooth, scraping down the sides of the bowl as necessary.: As the mixture turns silky, it will emit a creamy, sweet scent. Smoothness matters because lumps can create an uneven set and detract from the mouthfeel. Over mixing at high speed can incorporate too much air and cause cracking, so stop once perfectly smooth and scrape the bowl clean.
Transfer to a mixing bowl. Add egg and whisk by hand until completely incorporated.: Whisking by hand keeps the mixture denser and creamier, reducing air bubbles that could cause the minis to puff and sink. The batter should become homogeneous and slightly glossy. A common error is overwhipping, which can create tunnels and a less tender texture.
Spoon out 1/4 cup of batter into a small bowl. Add 3 tablespoons praline paste and stir until smooth. You’ll use this to make the swirl filling.: The swirl mixture will be richly aromatic and darker than the plain batter, signaling concentrated praline flavor. Mixing thoroughly ensures even color and distribution. Forgetting to reserve batter or mixing unevenly can result in blobs rather than pretty swirls when baked.
Fill each muffin cup with about 3 tablespoons of batter, filling no more than 2/3 full. You should have enough for about 10 cups. Reserve a little bit of the plain batter for the swirl.: Fill slowly so the cups remain tidy. The cups should feel substantial but not overfilled, leaving room for a slight rise. Overfilling leads to spillover or misshapen tops, so measure carefully for uniform results.
Drop a few dollops of praline batter onto top of each cheesecake, then another dollop or so of plain batter. Use a toothpick in a figure-8 pattern to gently swirl the two colors together.: As you swirl, watch the marbling form; the goal is an elegant, subtle pattern rather than full mixing. The motion should be delicate to maintain texture contrast. Be cautious not to over swirl, which can blend the flavors completely and lose the visual appeal.
Bake cheesecakes for 15 to 17 minutes or until edges are set and center still jiggles ever so slightly. Turn off the oven and crack the oven door; let cheesecakes cool in the oven for 30 minutes, then remove and place pan on a wire rack to cool completely. (At this point cheesecakes can be glazed or also refrigerated overnight if desired).: You will notice a gently puffed edge and a center that trembles faintly, the classic cue of a perfectly set cheesecake. Cooling slowly prevents cracks and helps texture develop. A typical mistake is removing them too quickly, which can cause centers to collapse or tops to crack.
For topping, gently melt white chocolate and 3 tablespoons praline paste. You can do this in the microwave, heating in 15 second intervals at 50% power (stirring between each interval), or on the stovetop over low heat (keep the pan on the burner for a minute or two, then remove it for a minute or two. You just need barely enough heat to melt the white chocolate and nothing more), or in a chocolate melting pot on the ‘warm’ setting.: The melted glaze should be glossy and pourable, with a fragrant, sweet aroma. Heat slowly to avoid seizing the white chocolate , which is sensitive to high temperatures. Overheating is the most common issue here, so use low heat and brief intervals.
Once topping is melted and smooth, spoon about 1 tablespoon onto the top of each cooled cheesecake, jiggling the spoon on the surface of the glaze to spread it out to the edges. Top each cheesecake with a candied pecan.: As you spoon, the glaze will spread into a shiny cap that frames the candied pecan . The contrast of soft filling and crisp garnish is delightful. If your glaze is too thick, thin it with a touch more warm cream; too thin glaze may run off, so adjust cautiously.
Refrigerate for at least 1 hour or until glaze is firmly set. Cheesecakes can be made up to 2 days ahead of time and refrigerated until ready to eat; let come to room temperature for 20 minutes before serving.: Chilling firms the glaze and allows flavors to meld, and you will notice the texture tighten slightly when they are ready. Letting them rest at room temperature loosens the filling to its ideal creamy state. A common slip is serving them too cold, which can mute flavors, so plan for that brief rest before plating.