Preheat the oven to 355F (180C) and line baking sheets with parchment paper.
In a mixing bowl, combine the bread flour, oats, baking powder, baking soda, and salt. Mix well.
Melt the butter in a light-colored saucepan over medium-low heat, stirring occasionally, until it turns golden brown and smells nutty (about 5–8 minutes). Pour the browned butter into a mixing bowl.
Add the white sugar and brown sugar to the browned butter and whisk well.
Add the egg, heavy cream, and vanilla extract. Whisk until the mixture has a homogenous consistency.
Gradually add the dry mixture to the wet ingredients. Using a rubber spatula, mix until no dry ingredients remain.
Fold in the cranberries.
Scoop 22-24 cookie dough balls (using a 2-tablespoon cookie scoop) onto the prepared baking sheets, leaving 2 inches (5 cm) between each ball.
Bake one baking sheet at a time for 10 minutes, or until the cookies have spread, puffed up, and turned golden brown around the edges. The tops should no longer look wet.
Remove from the oven and let the cookies cool on the tray for 5 minutes, then transfer them to a cooling rack to cool completely.
Repeat the baking process with the remaining cookie dough.