Start by preheating your oven to 375°F and lining a baking sheet with parchment paper. In a large mixing bowl, whisk together the rolled oats and all-purpose flour until well-combined.
Add the shredded apple to the dry ingredients, stirring to coat every piece with the oat and flour mixture. This prevents the apple from clumping together in the final treats.
Pour in the low-sodium beef broth, then add the natural peanut butter, honey, and olive oil. Mix everything until a tacky but not sticky dough forms. The dough should hold together when scooped.
Using a medium cookie scoop, portion the dough into balls and place them on your prepared baking sheet. Flatten each ball into a disc about ¼ inch thick or less.
Bake for 8 minutes, then flip each treat and bake for an additional 8-10 minutes until golden brown. Cool completely on a wire rack before serving to your eager pup.
Notes
Check your peanut butter label carefully - Always verify that your peanut butter doesn't contain xylitol, which is toxic to dogs.
Make treats smaller for small dogs - Use a small cookie scoop or create score marks with a knife to break larger treats into smaller pieces.
Don't overbake - Watch for golden brown color rather than timing alone, as ovens can vary.
Let them cool completely - Hot treats can burn your dog's mouth, and they'll be crunchier once fully cooled.