1-Preheat and Prepare: First, preheat the oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper for easy removal later. Make sure to have all your ingredients measured out, like the pumpkin puree and toffee bits, to avoid any mix-ups.

2-Make the Base: In a bowl, combine the cake mix, flour, and pumpkin pie spice. Stir in the melted butter or your vegan alternative until it forms a crumbly mixture. Press this into the pan to create the base, saving some for the top.

3-Make the Base: Next, prepare the pumpkin filling by whisking together the pumpkin puree, egg, and sweetened condensed milk. For related baking ideas, try baked oatmeal cups on our site, which use similar techniques for a quick treat.

4-Assemble and Bake: Spread the pumpkin mixture over the base, then sprinkle on the toffee bits and pecans. Add the reserved crumb topping for a nice finish. Bake for 35-45 minutes until set, rotating halfway for even baking.

5-Cool and Serve: Let the bars cool in the pan for at least an hour. Once ready, slice them up and enjoy. This method ensures the bars hold their shape, perfect for busy professionals on the go.