1-First Step: Mise en Place Preheat oven to 350°F. Line two baking sheets with parchment paper. Soften butter at room temp (not melted). Chop toffee bars into bits if needed. Measure all ingredients accurately. This setup keeps things smooth for busy home cooks.

2-Second Step: Cream Wet Ingredients In a large bowl, beat 1 cup softened unsalted butter, 3/4 cup brown sugar, and 1/4 cup granulated sugar with a mixer on medium for 2-3 minutes until light and fluffy. Scrape sides often. This incorporates air for tender chewy toffee cookies. For brown butter cookies twist, brown the butter first over medium heat until nutty (cool before using).

3-Third Step: Add Eggs and Vanilla Beat in 2 large eggs one at a time, mixing well after each. Add 2 tsp vanilla extract. Batter may look curdled; thats fine. For dietary tweaks, use flax eggs here for vegan soft chewy toffee cookie recipe.

4-Fourth Step: Mix Dry Ingredients In a separate bowl, whisk 2 1/4 cups flour, 1 tsp baking soda, and 1/2 tsp salt. Spoon flour into cup and leveldo not scoop to prevent dense cookies. Gradually add dry to wet on low speed until just combined. Avoid overmixing.

5-Fifth Step: Fold in Toffee and Add-Ins Gently fold in 1 1/2 cups toffee bits and optional 1/2 cup chocolate chips with a spatula. Dough will be sticky. Chill 30 minutes for thicker easy homemade toffee cookies; optional but recommended.

6-Sixth Step: Scoop and Bake Scoop tablespoon-sized balls (1.5 tbsp each), place 2 inches apart on sheets. Bake 10-12 minutes until edges are golden, centers soft. Rotate sheets halfway. Do not overbake for chewiness.

7-Final Step: Cool and Serve Cool on sheets 5 minutes, then transfer to wire racks. Enjoy warm or store. Pair with milk for best experience. These heath bar cookies stay soft days later.