These irresistible bars combine the cozy, spiced flavor of sweet potato with a buttery pecan streusel topping. Perfect for fall gatherings or a sweet treat any time of year.
Store cooled bars in an airtight container at room temperature for up to 3 days, or refrigerate for up to 5 days. For longer storage, freeze individual bars wrapped in plastic for up to 2 months; thaw at room temperature. Make-ahead: Bake and cool completely, then cover and refrigerate overnight before cutting and serving. Variations: Add 1/4 tsp ground ginger or cloves to the spice mix, or substitute walnuts for pecans. For a dairy-free option, use vegan butter. Serve slightly warmed or at room temperature.