01 - Heat oven to 350°F (175°C). Line a 12-cup muffin tin with paper liners or lightly coat with nonstick spray.
02 - In a large mixing bowl, whisk together melted butter, light brown sugar, and granulated sugar until smooth.
03 - Beat in the egg and vanilla extract until the mixture is thoroughly combined.
04 - Add all-purpose flour, baking powder, and salt. Stir just until incorporated, avoiding overmixing.
05 - Divide the blondie batter evenly among the prepared muffin cups, using about 2 tablespoons per cup.
06 - In a medium bowl, blend ricotta cheese, honey, and lemon zest until smooth.
07 - Spoon approximately 1 tablespoon of ricotta mixture onto the center of each blondie cup.
08 - Top each cup with a selection of fresh berries, gently pressing them into the ricotta.
09 - Bake for 22 to 25 minutes, until the edges are golden and centers are just set.
10 - Allow to cool in the tin for 10 minutes, then transfer cups to a wire rack to finish cooling completely.