Butterscotch Blondie Bars with Peanut-Pretzel Caramel

INGREDIENTS

• 4 cups roasted unsalted peanuts
• 2 large eggs
• 1/4 cup (1/2 stick) unsalted butter
• 1 teaspoon kosher salt
• 1/4 cup honey
• 1 teaspoon vanilla extract
• 3/4 cup (1 1/2 sticks) unsalted butter
• 2 cups (packed) light brown sugar
• 1/2 cup heavy cream
• 2 cups sugar
• 2 teapsoons baking powder
• 1 1/2 cups 1 1/2"-wide thin twisted pretzels, coarsely crushed
• 1 1/2 cups all-purpose flour