Preheat oven to 350° Fahrenheit. Position oven rack in middle of oven. Line cookie sheet with parchment paper or silicone baking mat and set aside.
Add 1 cup unsalted butter and 1 ¼ cups granulated sugar to stand mixer bowl. Set mixer to medium speed and cream ingredients together 1 to 2 minutes or until mixture is fluffy, smooth, and very pale in color. Pause mixer as needed and scrape down sides of bowl with silicone spatula to ensure entire mixture is well-blended. Be careful not to over-mix.
When mixture is fluffy and pale, pause mixer. Crack 1 large egg directly into mixing bowl, then add 2 tablespoons light corn syrup, 1 teaspoon pure vanilla extract, and ½ teaspoon butter emulsion. Mix ingredients together on medium speed until just combined.
Once combined, pause mixer. Add 2 ½ cups all-purpose flour, ½ teaspoon fresh baking soda, and ½ teaspoon salt to mixing bowl and mix on medium speed until dough forms.
When dough has formed, remove bowl from stand mixer. Add ½ cup holiday sprinkles and ½ cup white chocolate chips to bowl and use large metal spoon to mix until sprinkles and chocolate chips are just incorporated. Be careful not to overmix.
Once all ingredients are fully incorporated, use cookie scoop to portion dough into 2-tablespoon scoops (2 scoops total from #60 cookie scoop or 1 scoop total from #40 cookie scoop).
Roll each scoop of dough between palms of hands to form into smooth ball, then place ball of dough on prepared cookie sheet.
Repeat with remaining cookie dough until all dough has been rolled into dough balls and transferred to cookie sheet. Leave approximately 2 inches of space between dough balls to allow for dough to spread during baking.
Place baking sheet in preheated oven. Bake cookies 6 minutes, then begin checking doneness. Continue baking as needed, checking often, until cookies have flattened and edges are just lightly golden brown. See Notes below.
Once edges of cookies begin to turn lightly golden brown, carefully remove cookie sheet from oven and set aside. Let cookies rest on cookie sheet 5 minutes.
After 5 minutes, carefully remove cookies from cookie sheet with spatula. Transfer cookies to wire cooling rack(s) and let cookies cool completely. Serve as desired.