This might be the best cheesecake I've ever had. A crustless, caramelized beauty swirled with Baileys Irish Cream — impossibly creamy inside, perfectly blistered on top.
Preheat oven to 430°F. Grease a 9-inch round springform pan with Irish butter, then line it with two overlapping sheets of parchment so edges rise above the rim. This both prevents sticking and allows the cheesecake to climb and blister.
Beat cream cheese and granulated sugar together in a stand mixer, medium speed, until very smooth, about 3 minutes. Scrape down the bowl for a lump-free, silky base.
Add eggs and egg yolk one at a time, beating on low after each, then pour in Baileys Irish Cream and vanilla extract. Beat until fully incorporated, smooth, and glossy. Chef's tip: Baileys adds moisture, so mix just until combined — overbeating thins the batter.
Drizzle in heavy cream and fine sea salt; fold gently by hand. Texture cue: Batter should be pourable but thick enough to mound slightly.
Pour batter into the prepared pan, smooth the top. Bake uncovered for 50 minutes, until top is deeply caramelized and the edges are set but the center still jiggles like custard. Oven behavior: Higher heat creates a signature burnt crust — if too pale after 50 minutes, broil 2–3 min for deeper blister.
Let cheesecake cool in pan at room temp for 2 hours — this stops carryover cooking and lets the inside stay creamy. Chef's tip: Removing too soon causes collapse!
Carefully lift cheesecake using parchment. Slice with a hot, wet knife for clean edges. Serve room temperature for optimal texture.