Step 1

Preheat the oven to 325 degrees.

Step 2

Add the butter, granulated sugar, and brown sugar to a mixing bowl and beat until fluffy and creamy.

Step 3

Mix the eggs into the bowl one at a time until smooth.

Step 4

Place the flour, baking powder, milk, and vanilla extract in the bowl and beat until just combined.

Step 5

Fold the pecans and toffee chips into the batter.

Step 6

Grease the inside of a bundt pan and fill it with the batter. Smooth the top out and bake for 1 hour and 30 minutes, or until cooked completely through.

Step 7

Remove the cake from the oven, turn over and allow to cool on a rack.

Step 8

When the cake has cooled, add the evaporated milk and 1 cup of brown sugar to a saucepan over medium-high heat on the stove. Bring the mixture just to a boil and then reduce to simmer for 8-10 minutes.

Step 9

Remove the mixture from the heat and stir in the butter and vanilla extract.

Step 10

Drizzle the sauce while still hot over the cooled cake and serve.