Preheat the oven to 375 degrees F (190 degrees C). Line 2 cookie sheets with parchment paper.

Mix almonds, cranberries, peanuts, and candy pieces together to make trail mix.

Mix oats, flour, brown sugar, baking soda, and salt together in a large bowl. Beat in butter, honey, egg, and vanilla extract using an electric mixer or wooden spoon until dough is thoroughly combined. Fold in trail mix.

Drop tablespoonfuls of cookie dough onto the prepared cookie sheets.

Bake in the preheated oven until edges are set and bottoms of cookies are golden brown, about 8 minutes. Cool on wire racks.