Combine graham cracker crumbs, melted butter, granulated sugar, and salt in a bowl until the mixture looks like wet sand. Press about one tablespoon firmly into each cup of a lined muffin tin, going up the sides slightly. I learned this the hard way—pressing too gently means your base crumbles when you bite it, so get a little aggressive here.
Freeze the crusts for exactly 10 minutes while you prepare the filling. This matters because a warm filling poured onto a room-temperature crust will cause the butter to soften unevenly. I've watched the difference this ten-minute pause makes—it's small but real.
Beat softened cream cheese and sour cream together until completely smooth, about two minutes of mixing. Why this combination instead of just cream cheese? The sour cream prevents that dense, almost chalky texture cream cheese can get when frozen alone. Add powdered sugar and vanilla bean paste, then beat for another minute until no lumps remain.
In a separate bowl, whip the heavy cream to stiff peaks using an electric mixer. Fold this whipped cream gently into the cream cheese mixture in three additions, being careful not to deflate all the air. I know it feels like you're losing volume, but that's exactly the point—those air pockets keep the filling scoopable.
Fold fresh diced strawberries and honey into the filling by hand using a spatula, making maybe fifteen gentle folds total. I confess I've overmixed this step and ended up with strawberry-pink filling instead of visible berry pieces—don't be me. Sprinkle agar agar powder over the strawberries and fold three more times to distribute it evenly.
Divide the filling equally among the muffin cups, filling each about three-quarters full. Smooth the tops gently with the back of a spoon, then transfer the entire tin to the freezer for a minimum of four hours, preferably overnight. This is where your patience pays off in texture and flavor development.
Once frozen solid, run a thin knife around each cup's edge and pop the frozen strawberry cheesecake bites cozy out onto a parchment-lined plate. Store in an airtight container if you're making these more than a day ahead, though I promise they disappear faster than that.