Prep the tin: Line a 12-cup muffin tray with paper or silicone liners.
This makes unmolding easy.
Make the chocolate shell base: Microwave chocolate chips and oil in 20–30 second bursts, stirring until smooth. Spoon about 1 teaspoon into each liner. Tilt or use a spoon to coat the bottom.
Chill 5–10 minutes to set.
Mix the strawberries: Toss diced strawberries with lemon juice and optional sweetener. Pat dry lightly with a paper towel to remove excess moisture.
Blend the filling: In a bowl, beat softened cream cheese until smooth. Add Greek yogurt, protein powder, cocoa, sweetener, vanilla, and salt.
Mix until creamy with no lumps. Adjust sweetness to taste.
Assemble the cups: Divide the filling over the set chocolate bases (about 2 tablespoons per cup). Tap the tray gently to level.
Add strawberries: Spoon a small layer of strawberries over the cheesecake filling, pressing lightly so they adhere but don’t sink.
Top with chocolate: Rewarm remaining chocolate if thick.
Spoon 1–2 teaspoons over each cup to cover the berries and filling. Use the back of a spoon to spread to the edges.
Chill to set: Refrigerate for at least 1 hour, or until the chocolate is firm and the filling is set. For a cleaner bite, chill 2–3 hours.
Garnish and serve: Add crushed freeze-dried strawberries, chocolate shavings, or a pinch of flaky salt before serving.