Preheat your oven to 375°F (190°C) and lightly grease a 12-cup muffin pan.
In a big mixing bowl, combine the almond flour, egg, melted butter, and sea salt. Mix everything until a smooth, easy-to-work-with dough forms.
Divide the dough into 12 equal balls. Gently press each ball into a muffin cup. Use a small glass or the bottom of a cup to firmly press down and create a perfect tart shell shape.
Bake these prepared crusts for just 7 minutes until they look lightly golden. This helps them stay crisp! Remove them from the oven.
Evenly fill each warm, partially baked crust with the chopped cooked bacon, cubed cheese, and vibrant unsweetened dried cranberries. Sprinkle with the remaining sea salt, a pinch of black pepper (if you like), and the fresh thyme leaves.
Pop the filled tartlets back into the oven for another 10 minutes, or until the cheese is beautifully melted and bubbly.
Let your delicious savory tartlets cool in the muffin pan for 8-10 minutes. Then, gently run a butter knife around the edges of each tartlet to loosen and lift them out. They're best served warm!