For financiers, I use mini-muffin tins, which are easily available. I'm not a fan of silicone bakeware but know that some people like it. This batter is pretty forgiving so can be baked in madeleine molds or even in larger muffin tins, filling them only about halfway. If you use another size mold, you'll likely need to adjust the baking time; bake them until browned on top, and the feel just set in the center when you touch them. As mentioned, I made these with leftover brown butter from the Brown Butter Old Fashioned recipe. I started with 4 ounces (8 tablespoons/115g) of butter, which yielded the amount called for in the recipe. If starting from scratch, and making your own brown butter, start with that amount of brown butter, then you can measure it out when it's browned and cooled. (If you need a bit more butter, you can simply add a bit of melted butter to it, to reach the 2 1/2 oz/75g amount. There are links at the end of the post with detailed instructions on making brown butter.