Preheat the oven. Set the oven to 350°F and line an 8×8-inch baking pan with parchment paper.
Combine the wet ingredients. In a large bowl, mix the eggs and pumpkin puree. Add the sugar, whole milk, pumpkin pie spice, vanilla extract, and salt. Stir until evenly combined.
Add the oats and pecans. Fold in the rolled oats and chopped pecans, mixing until everything is evenly coated with the pumpkin mixture.
Fill the baking pan. Transfer the mixture to the prepared pan. Spread it evenly and gently press down to create a level surface.
Bake. Place the pan in the oven and bake for approximately 25 minutes, until the top looks set.
Cool and slice. Allow the oatmeal bars to cool completely before slicing. They continue to firm up as they cool, giving them their chewy texture and helping them hold together. Cut into 16 small bars and serve.