Line a small (15 x 9 cm) container with parchment paper and set aside.
In a bowl, combine the almond flour, 2–3 tablespoons sweetener, 1/2 cup heavy cream, and 1 teaspoon vanilla extract until a uniform, slightly sticky nougat forms.
Press the nougat mixture firmly and evenly into the prepared container using the back of a spoon or spatula.
For the caramel, melt 4 tablespoons butter in a saucepan over medium heat. Add 3 tablespoons sweetener and cook, stirring constantly, until the sweetener melts and the butter begins to brown, about 3–4 minutes.
Add 1/2 cup heavy cream and 1 teaspoon vanilla to the pan, bring to a boil, then reduce to a simmer and cook the caramel, stirring regularly, until thickened and golden (about 8 minutes).
Pour the hot caramel over the almond nougat layer, spread evenly, then scatter the 1/4 cup peanuts on top and press them gently into the caramel.
Freeze the layered block for 40–50 minutes until firm. Remove from the container and slice into 6 bars (or 12 smaller bars if preferred) and return to the freezer while you melt the chocolate.
Melt the chocolate chips (about 1/2 cup plus 1 tbsp) with 1 tablespoon coconut oil in a bain-marie or microwave (2 x 30s bursts, then 10s bursts), stirring until smooth and slightly cooled.
Dip each frozen bar into the melted chocolate to coat fully, allow excess chocolate to drip off, then place on parchment and refrigerate until the chocolate sets.