Is there actually armor in this recipe?
Only emotional armor. This cake is your cozy shield against a long week.
Can I make this as a sheet cake instead of layers?
Yes. Bake in a greased 9x13-inch pan at 350°F for 30 to 40 minutes, or until a toothpick comes out with a few moist crumbs. Optional nerdy cue: the center should read about 200 to 205°F on an instant-read thermometer. Frost right in the pan for the ultimate low-drama version.
Do I have to use espresso powder?
No. It simply deepens the chocolate. At 2 teaspoons most people will not clock it as “coffee,” but taste is personal. If you skip it, just leave it out. If you want a little extra oomph, add an extra 1 teaspoon vanilla or a tiny pinch more salt.
My caramel seized or got grainy. Can I fix it?
Usually, yes. Return it to low heat and whisk until it loosens, then bring it to a gentle simmer for a minute to dissolve any sugar crystals. If it is still too thick, whisk in 1 to 2 tablespoons warm cream or water until smooth. For future-you: avoid stirring early, keep the pan and spoon clean, and use warm cream.
Can I make the frosting less sweet?
Yes, with a little strategy. Sweetness mostly comes from the powdered sugar, not the cocoa. Start with 3 1/2 cups powdered sugar, then taste. If you want it less sweet, reduce the total sugar by about 1/2 cup and add an extra splash of cream to keep it silky. A pinch more salt also makes the caramel flavor pop without adding sugar. If you want a significantly less-sweet finish, consider a less-sweet style frosting (like a Swiss meringue buttercream) and swirl caramel into that.