Spray or grease 5 cups of a standard size muffin tin.
Warm the almond butter, milk and maple syrup in a small saucepan on the stovetop over low heat until warm and melted but not boiling (you can also do this in the microwave).
Place the oats, flaxseed meal, 1/2 teaspoon rosemary and optional salt and pepper in a small food processor. Add the warm almond butter mixture; pulse until oats are chopped and mixture comes together into a cohesive dough.
Divide dough into 5 equal portions; roll each portion into a ball and press one into each of the prepared cups, flattening tops with fingertips. Sprinkle with almonds and remaining 1/4 teaspoon rosemary, pressing into dough to adhere.
Refrigerate for at least 1 hour until firm before removing from tin.
Notes
Storage: Store in an airtight container at (cool) room temperature for up to 3 days, in the refrigerator for 2 weeks, or freezer for 3 months.