In a small bowl, mix the warm milk, granulated sugar, and active dry yeast together. Allow the mixture to sit for about 5 minutes or until it becomes frothy, indicating that the yeast is active.
In a large mixing bowl, whisk together the melted butter, egg, vanilla extract, and salt until well combined. Add the frothy yeast mixture to this bowl, stirring thoroughly to combine.
Gradually incorporate the all-purpose flour into the wet mixture, stirring until a soft dough begins to form. Transfer the dough to a lightly floured surface and knead it for approximately 5-7 minutes until it becomes smooth and elastic.
Shape the kneaded dough into a ball and place it in a greased bowl. Cover the bowl with a kitchen towel and let the dough rise in a warm draft-free area for about 1 hour, or until it has doubled in size.
While the dough is rising, prepare the sticky caramel layer: In a medium saucepan, combine the packed brown sugar, light corn syrup, and 1/4 cup butter. Heat over medium heat, stirring constantly until the mixture is smooth and begins to bubble. Remove from heat, then fold in the chopped pecans.
Pour the warm pecan caramel mixture into a greased 9x13 inch baking pan, ensuring it spreads evenly across the bottom.
Once the dough has risen, gently roll it out on a floured surface into a rectangular shape, approximately 12x15 inches in size.
Brush the surface of the dough with additional melted butter, then evenly sprinkle the brown sugar and ground cinnamon across the entire surface.
Starting from the long edge, tightly roll the dough into a log shape. Carefully slice the log into 12 equal pieces. Place each piece cut side down into the prepared baking pan on top of the caramel mixture.
Cover the pan with a clean towel and let the buns rise again for another 30 minutes, allowing them to puff up.
Preheat your oven to 350°F (175°C). Once the buns have risen, bake them in the preheated oven for 25-30 minutes or until they are golden brown and puffed.
After baking, allow the buns to cool in the pan for about 5 minutes. Then, gently invert the pan onto a serving platter, so the sticky caramel and pecans are on top.
Notes
For an even more indulgent touch, drizzle with extra caramel sauce and garnish with whole pecans. Serve the sticky buns warm to fully enjoy their gooey goodness!