1. Heat oven to 350 degrees. Line two baking sheets with parchment; set aside. In a large bowl, sift together flour and baking soda.

2. In the bowl on an electric mixer fitted with the paddle attachment, cream the butter and both sugars on medium-high speed until light and fluffy, 2 to 3 minutes, scraping down the sides of the bowl once or twice during mixing. Add the egg; mix on high speed to combine. Add the vanilla; mix to combine. Scrape down the sides of the bowl.

3. Working in additions, add the flour mixture to the egg mixture on low speed until well combined. Add the oats, cherries, chocolate, and toffee pieces; mix to combine.

4. Spoon a heaping tablespoon of dough onto a baking sheet. Repeat, spacing 2 inches apart.

5. Bake cookies until golden brown, about 10 minutes. Transfer to a wire rack to cool. Store in an airtight container up to 2 days.