Preheat your oven to 450°F (232°C).
Place the prepared 8 oz. (225g) of red radishes into a mixing bowl.
Drizzle 2 tbsp. (30ml) of olive oil over the radishes, add the 0. 25 tsp. (1g / 0.04 oz) of dried oregano, and stir gently until the radishes are evenly coated.
Spread the coated radishes in a single layer on a baking sheet and place them in the preheated oven to bake for 18 to 22 minutes, mixing occasionally to ensure an even roast.
While the radishes bake, melt the 2 tbsp. (28g / 0.99 oz) of unsalted butter in a small saucepan over medium-low heat, then add the 1 diced garlic clove (3g / 0.11 oz) and cook for about 3 to 5 minutes until aromatic.
Remove your roasted Baked Radish Snack from the oven, sprinkle evenly with the 1 tsp. (5ml) of lemon juice, top with the melted garlic butter mix, season with the 0. 1 tsp. (0. 5g / 0.18 oz) salt and 0. 1 tsp. (0. 2g / 0.07 oz) pepper, garnish with 1 pinch (1g / 0.04 oz) of fresh parsley, and serve immediately.
Dry Them Thoroughly: After washing your radishes, pat them completely dry with a paper towel before tossing them in oil. Any leftover water will cause them to steam in the oven rather than roast, preventing that beautiful caramelization.
Keep Cuts Uniform: Whether you halve or quarter your radishes depends on their size, but make sure all your pieces are roughly the same size. This guarantees an even bake so you don't end up with some mushy pieces and some raw ones.
Add a Cheese Finish: For an extra layer of savory depth, sprinkle a tablespoon of freshly grated Parmesan or Pecorino Romano over the radishes right when they come out of the oven.