Preheat the oven to 350°F. Then line an 8 x 8-inch baking pan with parchment paper and lightly grease it with oil or cooking spray.

In a large bowl, add the butter, granulated sugar, brown sugar, vanilla, and eggs.

Mix until smooth, light, and well combined.

Next, add the flour and salt. Mix just until everything comes together.

Be careful not to overmix!

Then fold in the crushed pretzels and chocolate chips. Mix gently until they are evenly spread through the batter.

Spread the thick batter evenly into the prepared pan.

Bake for 35–45 minutes, or until a toothpick inserted in the center comes out clean or with a few moist crumbs.

While the cake cools slightly, combine the chocolate chips and vegetable oil.

Microwave the mixture for 20–30 seconds. Then stir until smooth and melted.

Lastly, drizzle the melted chocolate over the cake and sprinkle crushed pretzels on top.

Let the chocolate set slightly before slicing and serving!