Almond Flour Coffee Cake (paleo)

"This coffee cake has a light, fluffy texture with just enough cinnamon flavor to be delicious without being overpowering. The crumb topping is a little crumbly and a little crunchy, which gives it the perfect balance of deliciousness. This cake is great for serving a crowd because it's so easy to make—and you don't even have to buy anything special! It's made without sour cream or xantham gum, so it's Paleo, grain-free, and gluten-free. Plus, the almond flour adds some nutty heartiness that you won't find in other cakes."