Preheat your oven to 275°F (135°C) and line a large baking sheet with parchment paper.

In a medium mixing bowl, whisk together the vegetable oil, honey, yellow mustard, and onion powder until smooth.

Place the sourdough hard pretzels in a ziplock bag and gently crush them into bite-size pieces.

Add the crushed pretzel pieces to the mixing bowl and toss thoroughly with a spatula until evenly coated.

Spread the coated pretzel pieces in a single layer on the prepared baking sheet.

Bake for 30 minutes, stirring halfway through for even baking.

Let the pretzel bites cool completely before serving.