01 - Preheat the oven to 350°F. Line a 12-cup muffin pan with paper liners or lightly grease each cup.
02 - In a medium bowl, whisk together the all-purpose flour, baking powder, baking soda, and salt until evenly distributed.
03 - In a large bowl, whisk the honey, vegetable oil, eggs, plain yogurt, freshly squeezed orange juice, lemon juice, orange zest, lemon zest, and vanilla extract until smooth and well incorporated.
04 - Gradually fold the dry ingredient mixture into the wet ingredients until just combined. Be careful not to overmix, as this can produce tough muffins.
05 - Divide the batter evenly among the 12 prepared muffin cups, filling each about two-thirds full.
06 - In a small bowl, combine the flour, granulated sugar, thyme leaves, and a pinch of salt. Add the cold cubed butter and use your fingertips or a fork to work it in until the mixture resembles coarse crumbs.
07 - Sprinkle the thyme crumble evenly over the top of each portioned muffin batter.
08 - Bake for 20 to 22 minutes, or until a toothpick inserted into the center of a muffin comes out clean and the tops are lightly golden.
09 - Allow the muffins to cool in the pan for 5 minutes, then transfer them to a wire rack to cool completely before serving.