Preheat oven to 350°F (≈175°C). Line a 9×13‑inch baking pan with foil or parchment paper; spray or grease lightly.
In a large bowl, combine butter, flour, salt, sugar, and sliced almonds for the crust. Mix (electric hand mixer helps) until crumbly; press evenly into bottom of pan. Bake for 15 minutes, until crust edges just begin to color.
While crust bakes, in same bowl mix together the crumble topping ingredients (butter, flour, sugar, salt, almonds, oats) until crumbly.
After first bake, remove crust from oven. Spread the cherry pie filling in an even layer over crust, sprinkle in mini chocolate chips.
Distribute the crumble mixture evenly over filling; press gently to help it adhere.
Bake again for 20‑25 minutes until topping is golden brown and edges bubbling slightly.
Remove from oven and allow to cool completely in pan. Then use foil or parchment to lift bars out, cut into squares.
Serve plain or with whipped cream or ice cream as desired. Store in an airtight container in the refrigerator for up to 3 days.