Read about these cookies at Bake or Break.
Preheat oven to 350°. Line baking sheets with parchment paper or silicone liners.
Whisk together flour, baking powder, salt, and cinnamon. Stir in oats. Set aside.
Beat butter and brown sugar until fluffy. Add egg and vanilla, and mix well. Gradually add flour mixture, beating just until combined. Stir in toffee chips and almonds.
Drop dough by tablespoonfuls onto prepared baking sheets. Bake for 12-15 minutes or until lightly browned. Cool on baking sheets for a few minutes. Then, remove cookies to wire racks to cool completely.