1️⃣ Preheat
Preheat oven to 350°F (175°C).
Line an 8x8 or 9x9 baking pan with parchment paper.
2️⃣ Make the Crust & Crumble
In a bowl mix:
flour
oats
brown sugar
baking soda
salt
cinnamon
Add melted butter + vanilla and mix until crumbly.
Press half of the mixture firmly into the bottom of the pan to form the crust.
3️⃣ Prepare Apple Filling
In another bowl combine:
diced apples
sugar
lemon juice
cinnamon
nutmeg
cornstarch
Mix well.
Spread apples evenly over the crust.
4️⃣ Add Crumble
Sprinkle the remaining oat mixture over the apples.
5️⃣ Bake
Bake for 35–40 minutes until the top is golden brown and apples are soft.
Let cool for 15 minutes.
6️⃣ Add Salted Caramel
Warm the caramel slightly and stir in ½ tsp sea salt.
Drizzle generously over the bars.