Cheesy Broccoli Casserole - Traeger Grills

Ingredients

• As Needed cooking spray
• 3 Pound fresh broccoli (3 to 4 heads), trimmed and coarsely chopped
• 4 Tablespoon unsalted butter
• 1/2 medium yellow onion, diced
• 3 Clove garlic, minced
• 3 Tablespoon all-purpose flour
• 1 1/2 Cup milk
• 3/4 Cup half-and-half
• 1 1/2 Teaspoon seasoned salt
• 1/2 Teaspoon garlic powder
• 1/2 Teaspoon onion powder
• 1/2 Teaspoon paprika
• 1/2 Teaspoon freshly ground black pepper
• 4 Ounce cream cheese, room temperature
• 3 Cup shredded cheddar cheese, divided
• 2 Ounce ridged potato chips (about 1 heaping cup)
• 1 large egg, lightly beaten