Mexican Hot Chocolate Cocoa Pebbles Cookies

Ingredients

• ½ cup Cocoa PEBBLES™ cereal (divided)
• 2 cups all-purpose flour
• ½ cup unsweetened cocoa powder
• 2 teaspoons cream of tartar
• 1 teaspoon baking soda
• ½ teaspoon salt
• 1 cup (2 sticks) unsalted butter (room temperature)
• 1 ¾ cups sugar (divided)
• 2 large eggs
• 1 teaspoon vanilla
• 2 teaspoons cinnamon
• ¼ teaspoon chili powder (optional)