Foul-Proof Pepper Jelly Dip

Ingredients

• 2 (8-ounce) packages cream cheese, softened
• 1/4 teaspoon dry mustard
• 1/2 teaspoon garlic powder
• 1/4 teaspoon cayenne pepper
• 1/4 teaspoon celery salt
• 1/2 tablespoon dried onion, minced
• 1/2 teaspoon dried parsley
• 1 (4-ounce) block sharp cheddar cheese, thickly shredded
• 1 (4-ounce) block pepper jack cheese, thickly shredded
• 3/4 cup pepper jelly, homemade or store-bought
• 2 tablespoons fresh chives, thinly sliced, for serving
• round butter crackers, to taste, for serving