Chill the Creme Eggs: Pop the Creme Eggs in the fridge for 20–30 minutes. Cold centers hold their shape better while baking.
Prep the oven and tin: Heat oven to 350°F (175°C).
Grease a standard 12-cup muffin tin well, including the rims.
Mix the wet ingredients: In a bowl, whisk melted butter with granulated and brown sugars until smooth. Add egg and vanilla; whisk until glossy.
Combine the dry: In a separate bowl, stir flour, baking soda, and salt. Fold into the wet mix just until no dry streaks remain.
Stir in chocolate chips if using. The dough will be thick.
Portion the base: Scoop about 1 tablespoon of dough into each muffin cup and press to cover the bottom.
Add the filling: Unwrap the chilled Creme Eggs. Place one mini egg (or a half regular egg, cut-side down) in the center of each cup.
Seal the tops: Add another tablespoon of dough over each egg and gently press around the sides to fully enclose the candy.
Don’t compact too hard; you want room for spread.
Bake: Bake 10–13 minutes until the edges look set and lightly golden. The centers will still look soft—that’s perfect.
Cool briefly: Let them cool in the tin for 10 minutes to firm up. Run a thin knife around the edges, then lift out to a rack.
Serve: Enjoy warm for a gooey center, or at room temp for a fudgier bite.
A pinch of flaky salt on top is a great finish.